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-   -   [GAMBIT] size of boundary layer (http://www.cfd-online.com/Forums/ansys-meshing/81329-size-boundary-layer.html)

ferdi October 23, 2010 19:01

size of boundary layer
 
hi, everyone!

i have a final project to simulate 2-D combustion chamber in turbojet engine (internal flow)
i wanna ask, what size of boundary layer that should i have?
i set the boundary layer : a = 0.0001
b = 1.5 (ratio)
rows = 20
in that value is difficult to be convergenced
is it ok? or i have to change some value?

i need advice from you all, many thanks:)

BrolY October 25, 2010 07:10

The boundary layer height depends on the flow conditions.
You can find formula to calculate it on the help engine of your solver, or on internet.


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