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-   -   modeling flow around aerodynamic profile with using immersed solid (http://www.cfd-online.com/Forums/cfx/119031-modeling-flow-around-aerodynamic-profile-using-immersed-solid.html)

yutangg June 8, 2013 13:36

modeling flow around aerodynamic profile with using immersed solid
 
Hi everyone!
I try to modeling flow around aerodynamic profile with using immersed solid.
I did simulates with change:
- Momentum Sources (global) ( 7 to 50)
- Boundary Distance (0.7 to 3 mm for my mesh 0.5 mm )
and still nothing, the results (flow field and lift, drag force) are wrong.


How use immersed solid to aerodynamic simulation?

hmasenger June 9, 2013 03:38

it is really important to have inflated meshes near wall boundaries.did you use this type of mesh ?

yutangg June 10, 2013 15:38

thank you for your answer
yes, i tried out several types of nets but still i can't observe good the boundary layer

ghorrocks June 10, 2013 20:49

What Re and/or Ma number is the flow? What y+ are you using?

yutangg June 11, 2013 13:17

it's a laminar flow 800 Re and y+ < 2

ghorrocks June 11, 2013 20:54

y+ has no meaning for laminar flows.

If this is a laminar model then you might be able to get this to work with immersed solids. It is likely to be quite grid sensitive - have you done a mesh sensitivity check?


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