**
Academic Year 2018-2019**

**
Collection of past Exams
**

**Exam of February 2016**

- First part:
Lorenz model of slip Rayleigh-Bénard Thermoconvection
Elements of solution are in the appendix B of the lecture notes

- Second part: Study of a time series of a Grid Turbulence Flow

**Exam of February 2017**

- Spatial linear stability analysis -
The case of Plane Poiseuille Flow
Elements of solution are in the appendix B of the lecture notes

**Exam of February 2018**

- Weakly nonlinear
Rayleigh-Bénard Thermoconvection
at infinite Prandtl number
with no-slip boundary conditions
- Elements of solution

- First part:
Wind energy:
Simplified local and global models of a wind turbine
Element of solution: in question 6 one finds with the model developed a power

*P*= 4.2 MW, to be compared in question 7 with*P*(Betz) = 4.8 MW... - Second part:
Transition to turbulence:
Lorenz model of slip Rayleigh-Bénard Thermoconvection
Elements of solution are in the appendix B of the lecture notes

Emmanuel Plaut |
Last modified: Tue Feb 12 17:18:29 CET 2019 |