Sumários · Turbulência em Fluidos
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/sumarios/summary
Sumários · Turbulência em Fluidos
ptPT
© Instituto Superior Técnico
dsi@tecnico.ulisboa.pt (Técnico Lisboa)
FenixEdu CMS v4.0.5
http://blogs.law.harvard.edu/tech/rss
60

ONE POINT CLOSURES: eddy viscosity models
<p>Onepoint closures. Eddy viscosity concept. Algebraic models (zero equation models): Uniform turbulent viscosity model, Mixing length model; Oneequation models: KolmogorovPrandtl model, The SpallartAllmaras model. Twoequation models: Kappaepsilon model, Kappaomega model. Nearwall treatments. Reynolds stresses models. Limitations of the onepoint closures. Problems. </p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/onepointclosureseddyviscositymodels
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/onepointclosureseddyviscositymodels#844974686079512
Sumários
Mon, 06 Jun 2022 17:00:00 +0100

WALL BOUNDED FLOWS – Turbulent pipes and boundary layers flow
<p>The turbulent pipe and boundary layer flows: The scaling of the mean velocity. The inner and outer layers. The viscous sublayer. The logarithmic layer. Friction laws. Reynolds stresses and kinetic energy budgets in the turbulent pipe and boundary layer flows. Exercises. </p>
<p> </p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentpipesandboundarylayersflow
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentpipesandboundarylayersflow#844974686078247
Sumários
Fri, 27 May 2022 17:00:00 +0100

(CANCELED LECTURE)
(THE LECTURE WAS CANCELED BECAUSE OF THE CELEBRATIONS FOR THE DAY OF TÉCNICO)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/canceledlecture
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/canceledlecture#844974686077580
Sumários
Mon, 23 May 2022 17:00:00 +0100

experiencias com fio quente
experiencias com fio quente
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/experienciascomfioquente
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/experienciascomfioquente#844974686076697
Sumários
Thu, 10 Mar 2022 17:00:00 +0000

WALL BOUNDED FLOWS – Turbulent channel flow (Cont).
<p>The turbulent channel: The scaling of the mean velocity. The inner and outer layers. The viscous sublayer. The logarithmic layer. Friction law. Reynolds stresses and kinetic energy budgets in channel flow. Exercises. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflowcont
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflowcont#844974686076595
Sumários
Mon, 16 May 2022 17:00:00 +0100

EXPERIMENTAL METHODS
<p>Experimental methods of visualisation of fluid flows; Experimental velocity measurements; Pitot tube, Hot wire anemometry (HWA), Laser doppler velocimetry (LDV), Particle image velocimetry (PIV). Twopoint statistics, Correlations and spectra (time and space), Threedimensional energy spectrum, Onedimensional energy spectrum, Scaling of the energy spectrum. The KolmogorovObukhov spectrum. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/experimentalmethods
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/experimentalmethods#844974686075494
Sumários
Mon, 09 May 2022 17:00:00 +0100

THE DYNAMICS OF THE KINETIC ENERGY (Cont.)
<p>The role of pressure fluctuations in the dynamics of the turbulent kinetic energy. The Taylor microscale and Reynolds number based in the turbulent microscale. A criterium for defining a fully developed turbulent flow.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thedynamicsofthekineticenergycont
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thedynamicsofthekineticenergycont#844974686073749
Sumários
Mon, 18 Apr 2022 17:00:00 +0100

NUMERICAL METHODS
<p>The role of numerical simulations in research and engineering applications of turbulent flows. Computational fluid dynamics (CFD) and highperformance computing (HPC). Direct numerical simulations. Advantages and limitations. Pseudospectral schemes (collocation method). Problems: estimation of the grid size and number of iterations needed for a numerical simulation. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/numericalmethods
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/numericalmethods#844974686073748
Sumários
Fri, 22 Apr 2022 17:00:00 +0100

THE DYNAMICS OF THE KINETIC ENERGY
<p>The total (instantaneous), mean and fluctuating kinetic energy, and their governing equations. Physical meaning of each one of the governing equation terms. Energy transfer between the mean and fluctuating (turbulent) fields. Estimates for each one of the individual terms. Example: turbulent channel flow. Problems.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thedynamicsofthekineticenergy
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thedynamicsofthekineticenergy#844974686072771
Sumários
Mon, 11 Apr 2022 17:00:00 +0100

THE ENERGY CASCADE AND THE DISSIPATION LAW (cont.)
<p>Some experimental facts about the viscous dissipation in turbulent flows. The dissipation law. The energy cascade of RichardsonKolmogorov. The scales of turbulent flows. The true meaning of the Reynolds number in a turbulent flow.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlawcontbc8
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlawcontbc8#844974686071781
Sumários
Mon, 04 Apr 2022 17:00:00 +0100

INSTABILITY AND TRANSITION (cont.)
<p>Origin of turbulence: dynamical systems and chaos. Logistic map and the Lorentz equations. The KelvinHelmholtz instability. LinearStability analysis. Stability of parallel flows and the OrrSommerfeld equations. The TollmienSchlichting waves. Secondary instabilities in boundary layers and jets. Hairpin vortices in boundary layers and vortex rings in circular jets. The preferred jet mode. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/instabilityandtransitioncont
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/instabilityandtransitioncont#844974686070275
Sumários
Fri, 25 Mar 2022 17:00:00 +0000

INSTABILITY AND TRANSITION
<p>Origin of turbulence: dynamical systems and chaos. Logistic map and the Lorentz equations. The KelvinHelmholtz instability. LinearStability analysis. Stability of parallel flows and the OrrSommerfeld equations. The TollmienSchlichting waves. Secondary instabilities in boundary layers and jets. Hairpin vortices in boundary layers and vortex rings in circular jets. The preferred jet mode. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/instabilityandtransition
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/instabilityandtransition#844974686070274
Sumários
Mon, 21 Mar 2022 17:00:00 +0000

VORTICITY DYNAMICS (cont.)
(Continuation from the previous lecture): Vorticity: definition, circulation, BiotSavart law, Helmholtz law, Kelvin theorem. Vorticity and enstrophy governing equations: production, diffusion, dissipation of enstrophy. Vorticity and vortices: LambOssen, Rankine, Burgers vortices. Vorticity and turbulence.
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/vorticitydynamicscont
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/vorticitydynamicscont#844974686069292
Sumários
Fri, 18 Mar 2022 17:00:00 +0000

VORTICITY DYNAMICS
<p>Vorticity: definition, circulation, BiotSavart law, Helmholtz law, Kelvin theorem. Vorticity and enstrophy governing equations: production, diffusion, dissipation of enstrophy. Vorticity and vortices: LambOssen, Rankine, Burgers vortices. Vorticity and turbulence. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/vorticitydynamics
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/vorticitydynamics#844974686069291
Sumários
Mon, 14 Mar 2022 17:00:00 +0000

EQUATIONS OF FLUID MECHANICS
<p>Equations of fluid mechanics: Knudsen number and the continum assumption. Convective derivative. Mass conservation. NavierStokes equations. Dissipation in a viscous fluid.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/equationsoffluidmechanics
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/equationsoffluidmechanics#844974686068092
Sumários
Fri, 11 Mar 2022 17:00:00 +0000

INTRODUCTION
<p>Presentation of the course: Bibliography, grading, computational project and laboratory work. Introduction to turbulence in fluids. What is turbulence and why is it important: unsteadiness, tridimensionality, multiscale, random nature, strong transport and mixing.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/introduction
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/introduction#844974686068090
Sumários
Mon, 07 Mar 2022 17:00:00 +0000

CLARIFICATIONS RELATED TO THE EXPERIMENTAL AND COMPUTATIONAL PROJECTS
<p>The lecture was devoted to the clarification of specific aspects of the computational and experimental projects. </p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/clarificationsrelatedtotheexperimentalandcomputationalprojects
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/clarificationsrelatedtotheexperimentalandcomputationalprojects#563499709370090
Sumários
Fri, 24 Jun 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem7d4
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem7d4#563499709369853
Sumários
Thu, 23 Jun 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem3be
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem3be#563499709369852
Sumários
Thu, 09 Jun 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemb25
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemb25#563499709369851
Sumários
Thu, 02 Jun 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem156
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem156#563499709369850
Sumários
Thu, 26 May 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem2c0
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem2c0#563499709369849
Sumários
Thu, 19 May 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem1ca
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem1ca#563499709369848
Sumários
Thu, 12 May 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem2f2
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem2f2#563499709369847
Sumários
Thu, 21 Apr 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemd47
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemd47#563499709369846
Sumários
Thu, 07 Apr 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem77a
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem77a#563499709369845
Sumários
Thu, 31 Mar 2022 17:00:00 +0100

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemaf1
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblemaf1#563499709369844
Sumários
Thu, 24 Mar 2022 17:00:00 +0000

LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d NavierStokes solver to solve a given problem
<p>The experimental work took place in several session where each team of students acquired the instantaneous velocity signal at several jet locations using a hot wire anemometer (potential core, intermittent region, centerline (several locations). Each one of the teams of students latter used their data to compute and explain the evolution of several turbulent quantities; In the computational project the students were given a 2d NavierStokes solver and were assigned several problems to solve, requiring an analysis of the evolution of several unsteady flow phenomena. Both the laboratory and computational projects were supported through several sessions of discussion with the students. Both works required a report and the classifications were given after a discussion with each team of students. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/laboratoryandcomputationalworkacquisitionofvelocitytimesignalsinafreeturbulentjetuseofa2dnavierstokessolvertosolveagivenproblem#563499709369843
Sumários
Thu, 17 Mar 2022 17:00:00 +0000

LARGEEDDY SIMULATIONS 2 + MAP4
<p>The dynamic Smagorinsky model. Functional modelling. Analysis and validation of LES. Limitations of LES. Problems. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/largeeddysimulations2map4
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/largeeddysimulations2map4#563499709369842
Sumários
Mon, 20 Jun 2022 17:00:00 +0100

LARGEEDDY SIMULATIONS
<p>The concept of LES. Scale separation. Filter properties. Box, Cutoff and Gaussian filters. Application to the NavierStokes equations. Subridscale stresses. Kinetic energy dynamics of the large and small scales. Structural modelling. The Smagorinsky model. The dynamic Smagorinsky model. Functional modelling. Analysis and validation of LES. Limitations of LES. Problems. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/largeeddysimulations
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/largeeddysimulations#563499709368871
Sumários
Fri, 17 Jun 2022 17:00:00 +0100

WALL BOUNDED FLOWS – Eddy structures near the wall and drag reduction mechanisms.
<p>Eddy structure in wall bounded flows. Coherent structures and coherent vortices. Low and highspeed streaks. Ejections and Sweeps; Hairpin vortices: structure and effects. Low and high momentum region. Drag reduction: ribblets and polymer additives. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowseddystructuresnearthewallanddragreductionmechanisms
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowseddystructuresnearthewallanddragreductionmechanisms#563499709367528
Sumários
Mon, 30 May 2022 17:00:00 +0100

TURBULENT FREE SHEAR FLOWS: the round jet
<p>Canonical turbulent free flows. Thin shear layer approximation. Free round jet: constant momentum flux, Turbulent entrainment, selfsimilar solution, kinetic energy budgets. Problems. </p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/turbulentfreeshearflowstheroundjet
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/turbulentfreeshearflowstheroundjet#563499709367527
Sumários
Fri, 03 Jun 2022 17:00:00 +0100

WALL BOUNDED FLOWS – Turbulent channel flow (Cont).
<p>Description of stateoftheart DNS of channel flows. Exercises. </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflowcontc30
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflowcontc30#563499709365575
Sumários
Fri, 20 May 2022 17:00:00 +0100

WALL BOUNDED FLOWS – Turbulent channel flow
<p>Canonical turbulent wall flows, the turbulent channel, Simplification of the Reynolds equations for turbulent channel flows: the total stresses profile, Reynolds stresses and viscous stresses, friction velocity and viscous length scale, wall units.</p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflow
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/wallboundedflowsturbulentchannelflow#563499709364643
Sumários
Fri, 13 May 2022 17:00:00 +0100

THE STATISTICAL DESCRIPTION OF TURBULENCE
<p>Why use a statistical description? How to make averages? Reynolds equations. Reynolds stresses. The closure problem. </p>
<p> </p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thestatisticaldescriptionofturbulence
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/thestatisticaldescriptionofturbulence#563499709360760
Sumários
Fri, 08 Apr 2022 17:00:00 +0100

THE ENERGY CASCADE AND THE DISSIPATION LAW (cont.)
<p>Some experimental facts about the viscous dissipation in turbulent flows. The dissipation law. The energy cascade of RichardsonKolmogorov. The scales of turbulent flows. The true meaning of the Reynolds number in a turbulent flow.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlawcont
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlawcont#563499709359823
Sumários
Fri, 01 Apr 2022 17:00:00 +0100

THE ENERGY CASCADE AND THE DISSIPATION LAW
<p>Some experimental facts about the viscous dissipation in turbulent flows. The dissipation law. The energy cascade of RichardsonKolmogorov. The scales of turbulent flows. The true meaning of the Reynolds number in a turbulent flow.</p>
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlaw
carlos.silva@tecnico.ulisboa.pt (Carlos Frederico Neves Bettencourt da Silva)
https://fenix.tecnico.ulisboa.pt/disciplinas/TFlu/20212022/2semestre/verpost/theenergycascadeandthedissipationlaw#563499709359822
Sumários
Mon, 28 Mar 2022 17:00:00 +0100