code_saturne User's Forum

Hi team,

I am doing a thermal flow simulation as shown in the below figure using code_saturne V7.0.2. The high temperature boundary is on the left face to simulate the natural convection process in the side-open cavity. All boundary conditions are shown in the figure, where \theta is dimensionaless ...

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Hi team,

In Code_Saturne v7.0.2, I'd like to monitor the change of kinetic energy in whole field with time. Specifically, in each time step, Code_Saturne calculates kinetic energy in whole field, and output these values into a file. Then, I can plot its change with time. Could you share an example ...

Hi Yvan,

I have tested Code_Saturne three velocity scheme -- automatic, SOLU and second-order scheme.
As you predicted, SOLU and second-order scheme show excellent 2nd-order accuracy, but second-order scheme has lower error. The default setup (automatic) only has first-order accuracy, as shown in ...

Hello Yvan,

Thanks for your advice in post-processing. I know the reasons and list here in case someone has similar questions:
(1) I should extract velocity component instead of resultant velocity.
(2)I extract data from the cell centre and avoid any interpolation scheme.
(3)I use velocity centered ...

Hi Yvan,

I used paraview to extract data (velocity distribution) and tested interpolation and no interpolation. The error calculation is through L2-norm:



Best,
Yang

Hi Yvan,

I tested this case using centered velocity scheme, but it shows similar results.

Best,
Yang

Thanks Yvan,

(1) Did you test using the default centered scheme?
I think Code_Saturne default is velocity upwind scheme, and it results is first-order accuracy. Let me test centered scheme then.

(2)what type of mesh are you using ?
I generate mesh using Code_Saturne GUI, as shown below.

Best ...

Hi team,

I did a convergence study using Code_Saturne v7.0.2. I tested a pseudo-3D Poiseuille flow with inlet boundary (u=4.0*(y-y*y)) and outlet boundary. Also, the domain is (1m * 1m) and uniform mesh with 16, 50, 100 resolutions. In order to ensure accuracy, I set SOLU velocity scheme. However ...

Hi team,

I am using code_saturne v7.0.2. I want to use GUI to calculate time-averaged variables every 10 timesteps. I guess the default time-averaged calculation every timestep. Thanks.

Reagrds,
Yang