solver for LES natural convection
 

Hello everyone.
Is there any particular solver for LES model, incompressible, buoyant flow? I couldn't find any. If you have any custom solver for this, would you please share with me?

Hi Hasan,

Why don't you use buoyantFoam?

Quote:

buoyantPimpleFoam: Transient solver for buoyant, turbulent flow of compressible fluids for ventilation and heat-transfer

You can get the solver which you are looking for by changing the turbulent properties to LES.

If you type buoyantBoussinesqPimpleFoam -listTurbulenceModels you can see the options.

Kind Regards,
Said.

Hi Said,
Thank you for the reply. I searched the tutorial section of buoyantBoussinesqPimpleFoam solver but didn't find any LES example. All of these are in RANS model. If I want to change these into LES, which files do I need to change except the constant (model name) and 0 (boundary condition) folder? Do I need to make any changes to the system folder?

Hi Hasan,

You can search in tutorial files with for which files use LES turbulence model. For example when you type that you will find a LES turbulence model which you can coppy to your case directly -if LESModel is appropriate for you- in "incompressible/pisoFoam/LES/pitzDaily/constant/turbulenceProperties".

In system folder you should set maxCo (courant number), time step and maybe runTimeModifiable to yes. I have attached a sample turbulenceProperties and controlDict file for you.

Edit: Also if it doesn't suit you, you should make changes in fvSchemes and fvSolution.

Kind Regards,
Said.