Blunt body flow field shock wave self-adaptive structure grid generation method
A grid generation, blunt body technology, applied in the field of computational fluid dynamics grid generation, blunt body flow field shock wave adaptive structural grid generation, can solve the problem of low accuracy, reduce numerical calculation errors, ensure Effects of matching characteristics and improving simulation accuracy
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[0040] The blunt body is any shape that can generate a completely detached shock wave. It does not need to ensure surface symmetry or axis symmetry. It is suitable for working conditions where the incoming flow has an angle of attack and a sideslip angle.
[0041] Calculate the initial three-dimensional full flow field data according to the incoming flow conditions in front combined with the initial flow field grid; capture the shock wave grid points according to the flow field Mach number distribution, assemble the shock wave grid points into a shock wave grid surface and The grid surface is smoothed; the flow field grid is reconstructed with the shock wave grid surface as the internal docking boundary so that the grid near the shock wave is distributed along the shock wave surface and the grid is refined in the direction perpendicular to the shock wave. The reconstructed flow field grid recalculates the three-dimensional full flow field data; iterative flow field calculation,...
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