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August 2, 2013, 11:15
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rough wall
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#1 |
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Senior Member
moein
Join Date: Dec 2009
Posts: 132
Rep Power: 16   |
Hi experts.
I'm modeling a two phased flow water and air. I have rough wall with roughness of 4 mm. depth of water is about 10 cm and the velocity is nearly 4.5 m/s. I use k-e turbulent model. how much should be the distance of the mesh grid from the wall? |
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August 3, 2013, 07:05
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#2 |
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Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,850
Rep Power: 144 |
Do a mesh resolution sensitivity check and find out for yourself. There are no shortcuts - we can only guess and that is just a starting point. From there you have to refine it with a sensitivity check anyway.
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August 3, 2013, 16:30
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#3 |
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Senior Member
moein
Join Date: Dec 2009
Posts: 132
Rep Power: 16 |
thank you very much.
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