[ludosbiz]

Hi guyz,

first explanation, than comes the question!

i carried on analysis on stationary 2D cylinder with Fluent, with a mesh made in ICEM and all resulted as expected, no problem and appreciable physically results have been obtained.
Then i moved to oscillating cylinder in cross flow direction, and here came the problems with dynamic mesh, since the layering method creates eccessive distortion on the lateral sides of the cylinder, whereas on the upper side and below the boundary, it works fine. I thought indeed to change the mesh in triangles to use remeshing option, but results take more time to converge(a lot more) and are not so strictly right as before, comparing the stationary(remeshed) grid with the results obtained before. It seems that some amount of diffusion in generated from this newly made mesh.
Now the question: any suggestion on how to make the stuctured mesh deform properly,avoiding these lateral side effects? i mean, anybody knows how to use the layering method, avoiding the lateral mesh to distort till almost collapse? thx for the help to anyone, if u need screenshot just ask!