Conclusion

 
 

During this hands-on, we discovered Fluent : an industrial solution to calculate fluid flows and some of its possibilities. The study of the Rayleigh-Benard instability had made us focus on some particular points :

On the numerician's point of view, we studied which numerical schemes can be used with Fluent to simulate the natural convection phenomenon and which influence can have these choices. We also studied the influence of the meshing on the convergence and the solution.

On the physicist's point of view, we studied how the convection rolls can develop and how they don't. We focused on the determination of the critical Rayleigh number, on the influence of  the initialization.