Different temperature on boundary fluid-solid in CFX
1 Attachment(s)
Hi,
I have problem and need help. I do CHT simulation of flow around turbine vane and use SST model with and without turbulence transition and K-Omega model. I create line on boundary fluid-solid and check temperature. The temperature on solid side is different from this on fluid side. The difference is about 5%. My question is why, because those value suppose to be equal. I add chats. Thanks in advance |
Hi,
For CHT simulations you should add imbalances as a convergence critereon in addition to the normal residuals. What imbalances have you converged to? Glenn Horrocks |
Hi,
thanks for so fast reply. my settings for convergence criteria are: Residual type- MAX, Residual target- 0,00001. In expert parameters I didn’t mark imbalance normalization type. Regards |
Hi,
As I said, a CHT simulation can have high imbalances (which leads to temperature imbalances) but well converged residuals. That is why you should also use imbalances as a convergence critereon for CHT simulations. It is on the solver tab in CFX-Pre (not an expert parameter). Glenn Horrocks |
All times are GMT -4. The time now is 23:23. |