code_saturne User's Forum

Hello Ruonan, First I apologies for the response delay. I am not frequently on the user forum. Indeed, it seems that there is a problem with the rotating frame of reference (icorio = 1). This option is not frequently used and it appears that it miss a test case in our validation basis in order to ma...

Dear Ruonan, Thank you for the paper. I understand the flow that you want to simulate. 1) Concerning the centrifugal term, you are right, when you specify an angular velocity for your domain, the centrifugal term is taken into account as well as the Coriolis source term. However, in same way as it i...

Dear Ruonan, Yvan told me about your case and I run the first one (RANS in the relative frame of reference). I think that if you have only a Coriolis source term (in the IHM or in cs_user_parameters.c), together with walls and symmetry, it is normal that the solution is zero (relative) velocity ever...

Hello Luciano, I think it is technically possible (quite easily) by modifying the function cavitation_compute_source_term (src/base/cavitation.f90) and its call in navstv in order to introduce the temperature dependence and replace the "presat" constant with a temperature polynomial direct...

Hello, You are right, the cavitation source term model implemented in Code_Saturne differs from the original Merkle's model and the reason should be explain in ref [3] : it is because the alpha(1-alpha) factor makes the min/max principle (alpha must be between 0 and 1) is easier to satisfy with this...

Hello, As you noticed, there is a typo in the documentation of v4.0. The correct expression of the evaporation/condensation source term is the one of v4.2 documentation. It differs slightly from the original Merkle model. I will made the Code_Saturne documentation more explicit on this point. Note t...

Hello, The post http://code-saturne.org/forum/viewtopic.php?f=2&t=67 contains a few informations about Code_Saturne/Code_Saturne coupling. Note that if you don't have any overlapping region between the two separated meshes, you can activated the coupling scheme dedicated to interfacial coupling ...

Hi, In the Spalart-Shur correction, the "Coriolis-type" term you mention comes from the material derivative of the strain rate tensor (this term is used to "measure" the curvature of the streamlines and, since it is not an objective quantity, it generates Coriolis-type term in a ...

Hi, A framework that could manage this kind of recycling procedure is the code-code coupling. You have to consider 2 meshes: one for the upstream section with periodicity of translation at boundaries, the other for the downstream section. Using the cs_user_coupling.c user file, you can couple the in...

Hi Young, If you want to perform a test-filtering of your field, you can use the 'cfiltr' subroutine. Exemples of usage of this subroutine are in the visdyn.f90 source file which computes the subgrid viscosity for the DSM. The 'cfiltr' subroutine performs a (volume weighted) averaging of the field o...