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smoothing length in SPH

Hi there,

Is there any basis for chosing the h/deltaP (where h and deltaP are respectively the smoothing length and particle spacing ) ratio in SPH. Is it purely based on some numerical experiment? 




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How to interpret IGES files?


Can anyone please tell me how to interpret IGES files? I mean how to extract the details of order of spline, knot vectors, control points etc form the IGES files.





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Non-conformability in Mesh-free Methods

Can any one please tell me where to find some mathematical proof (or justification) of the non-conformability arises due to misalignment of background cell and the support domain in mesh-free methods based on Galerkin formulation.




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