Tke and Tdr Residual error

bgakhil · January 13, 2023, 00:10

Hi all...
I have been simulating a ships total drag. I did it properly in a model scale ratio. But when i try with full scale model, Tke and Tdr shoots up like anything. Rest everything seems fine. Meshing seems fine...around 2m cells...Prism layer meshing and all seems fine. 10 layers i have provided. I reduced UR upto 0.1 but no use.
Can anyone suggest any input in this issue.
Thank you in advance.

cramr5 · January 30, 2023, 02:37

Try open a scene and try to find where these values are and check the mesh around there. To me it looks like there is some bad mesh somewhere that creates this numerical instability

cwl · January 30, 2023, 04:11

Check the mesh.
Check max velocity, if it is unrealistically high - find where via Threshold derived part.

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January 30, 2023, 02:37		#2
cramr5 Member Marc Ricart Join Date: Jul 2022 Posts: 65 Rep Power: 4	Try open a scene and try to find where these values are and check the mesh around there. To me it looks like there is some bad mesh somewhere that creates this numerical instability

January 30, 2023, 04:11		#3
cwl Senior Member Chaotic Water Join Date: Jul 2012 Location: Elgrin Fau Posts: 437 Rep Power: 18	Check the mesh. Check max velocity, if it is unrealistically high - find where via Threshold derived part.