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Forum: Main CFD Forum

November 19, 2020, 13:19

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

Hi，sbaffini，thank you， have you used C_VOF_G...

Hi，sbaffini，thank you， have you used C_VOF_G directly before？

Forum: Main CFD Forum

November 19, 2020, 09:29

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

Yes，sbaffini，I am quite sure，this is what I see in the published paper， they also udf

Yes，sbaffini，I am quite sure，this is what I see in the published paper， they also udf， the only problem is the gradient of volume fraction， so could you tell me what should I do to solve it，thank you...

Forum: Main CFD Forum

November 19, 2020, 09:15

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

Hi，thank you for your kindful help, because I am not familar with udf, could you show

Hi，thank you for your kindful help, because I am not familar with udf, could you show me the relative codes about the gradient of volume fraction to me ，thank you so much.

Forum: Main CFD Forum

November 16, 2020, 23:46

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

Thank you so much for your reply，Could you tell how to calculate the gradient of volu

Thank you so much for your reply. As you can see in the image, I need to the gradient of volume fraction \nabla\alpha, Could you tell how to calculate the gradient of volume fraction on the cells？

Forum: Main CFD Forum

November 16, 2020, 23:45

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

So you mean if we calculate the cells in the center, we use the G, if the cells are i

So you mean if we calculate the cells in the center, we use the G, if the cells are in the outside surface, we use RG,is that right？

Forum: Main CFD Forum

November 16, 2020, 12:23

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

It is directly borrowed from the udf help document, but I cannot understand the foll

It is directly borrowed from the udf help document, but I cannot understand the following sentence, could you explain it to me, thank you.

The gradients stored in variables with the _G suffix are...

Forum: Main CFD Forum

November 15, 2020, 22:31

Replies: 13

What is the difference between gradient and reconstruction gradient vectors ？

Views: 1,972

Posted By hitzhwan

What is the difference between gradient and reconstruction gradient vectors ？

What is the difference between gradient and reconstruction gradient vectors ？

You can access gradient and reconstruction gradient vectors (and components) for many of the cell ...

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