code_saturne User's Forum

Hello Team, My model has three inlets(1-3) at the bottom and 4 outlets (4-7) (please see the attached image) Schematic of the model.PNG . Two outlets close to the top(4 and 6) and two somewhere in the middle (5 and 7). If I solved the model by using the outlet boundary condition the solution has the...

Hi Yvan, The artifacts have been reduced by decreasing the value of pressure residual with the iterative scheme of gradient reconstruction. however, in our model (E-scape model) we have a combination of structured and unstructured mesh (tetrahedral mesh) and the iterative scheme is not working for t...

Hi Yvan,

I have modified the mesh and trying to make it uniform in all the direction (please find the attached file). However, the solution still have artefacts. please have a look and give your view on this.

Hi,

The slope test for the velocity with blending factor 0.98 (2% upwind) has not been working as well. There are still mesh artefacts in the pipe flow case (please find the attached file).

Hi,

Slope test for velocity and 2% upwind (blending factor 0.98).

Hello,

Thank you for your constant support, In my case, I did not activate the pressure interpolation option.

Hi, In the present case we used the large eddy simulation for Re = 4000 vertical pipe flow with liquid metal as a working fluid. A pipe flow case has the mesh artefacts. For that solution we used different gradient calculation method (for instance least square; iterative method of handling non-ortho...

Hi,

Yes the mesh artefacts are appeared on Les time averaged quantities as well.

Hello Team, I am trying to simulate the large eddy simulation for the vertical pipe flow case with the dimension of (diameter of the pipe = 0.25m) and length (0.465m) for the Re = 4000. The liquid metal (LBE) is the working fluid (density = 10465kg/m3; kinematic viscosity = 2.29*10^-7) as per the Re...

Hi Yvan,

A gentle reminder for contacting the guys who resolve the artifacts issue of the LES simulation by using some post-processing filters.