Sumários

CLARIFICATIONS RELATED TO THE EXPERIMENTAL AND COMPUTATIONAL PROJECTS

24 Junho 2022, 17:00 Carlos Frederico Neves Bettencourt da Silva

The lecture was devoted to the clarification of specific aspects of the computational and experimental projects.    

 


LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d Navier-Stokes solver to solve a given problem

23 Junho 2022, 17:00 Carlos Frederico Neves Bettencourt da Silva

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 Navier-Stokes 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.  


LARGE-EDDY SIMULATIONS 2 + MAP4

20 Junho 2022, 17:00 Carlos Frederico Neves Bettencourt da Silva

The dynamic Smagorinsky model. Functional modelling. Analysis and validation of LES. Limitations of LES. Problems.   


LARGE-EDDY SIMULATIONS

17 Junho 2022, 17:00 Carlos Frederico Neves Bettencourt da Silva

The concept of LES. Scale separation. Filter properties. Box, Cut-off and Gaussian filters. Application to the Navier-Stokes equations. Subrid-scale 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.   


LABORATORY AND COMPUTATIONAL WORK: acquisition of velocity time signals in a free turbulent jet; use of a 2d Navier-Stokes solver to solve a given problem

9 Junho 2022, 17:00 Carlos Frederico Neves Bettencourt da Silva

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 Navier-Stokes 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.