Hi, I have problems estimat
I have problems estimating the refinement of a mesh. Is there any rough rule of thumb? What attributes have to be considered?
Hello Anita, Check this for a
Check this for a grid spacing near the wall: YPlus Calculator.
I hope this will be helpful,
Hi, generally it is a good
generally it is a good practice to perform a grid sensitivity analysis.
Start with a coarse grid and refine it until the results became independent from the grid size.
About the grid spacing near the wall you need to satisfy same value of y+ according with the turbulence model used.
A good starting point for y+ is to referring to a simple well-known problem, like i.e. the boundary layer in a flat plane.
Here http://geolab.larc.nasa.gov/APPS/YPlus/ a easy calculator of y+ is provided.
I hope this will be helpful
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