simulation used LES look like which used SST

FrozenTilapia · September 1, 2019, 11:20

Hi, I uesd LES model to simulate two condition, but the one of the result（Left of the image） look like that used SST model.
The configurations, mesh, model and boundary condition of two simulations are the same, expect the inlet velocity.
Can someone tell me how to solver it?
Thank you very much.
https://i.loli.net/2019/09/01/r9JPY3fbsw1BFgI.png

ghorrocks · September 1, 2019, 18:58

Have you checked your model that it has sufficiently low dissipation? Have you checked that you can accurately capture a turbulence energy spectrum?

If you want us to help you, you are going to have to explain what you are doing. Please attach the output file (or at least a snippet of it) and some images of what you are modelling.

Gert-Jan · September 2, 2019, 16:21

The mesh.........
Is it setup for SST or LES?

September 1, 2019, 11:20	simulation used LES look like which used SST	#1
FrozenTilapia New Member Join Date: Sep 2019 Posts: 1 Rep Power: 0	Hi, I uesd LES model to simulate two condition, but the one of the result（Left of the image） look like that used SST model. The configurations, mesh, model and boundary condition of two simulations are the same, expect the inlet velocity. Can someone tell me how to solver it? Thank you very much. https://i.loli.net/2019/09/01/r9JPY3fbsw1BFgI.png

September 1, 2019, 18:58		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,715 Rep Power: 143	Have you checked your model that it has sufficiently low dissipation? Have you checked that you can accurately capture a turbulence energy spectrum? If you want us to help you, you are going to have to explain what you are doing. Please attach the output file (or at least a snippet of it) and some images of what you are modelling. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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September 2, 2019, 16:21		#3
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,835 Rep Power: 27	The mesh......... Is it setup for SST or LES?