|November 17, 2007, 15:59||
Questions concerning Meshing.
I have some Questions concerning Meshing.
As I know, the Subdivisions of the Near-Wall Region can be divided into 4 as follows, namely: viscous sublayer, buffer layer or blending region, fully turbulent region or loglaw region, outer layer.
Suppose I am using LES and NearWall Model Approach, I have to set the 1st grid point near the wall around y+=5. but what's then?
what's the stretching ratio of mesh normal to the wall and parallel with the wall (including along the flow and perpendicular to the flow)?
is there a constraint of the stretching ratio to keep it not larger than a certain number or what?
how many grid points do I need to mesh in buffer layer or blending region? and how many in fully turbulent region or loglaw region? outer layer?
Any help would be greatly appreciated.
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