Hypersonic flight target flow field model and electromagnetic model coupling method

Abstract

The present invention discloses a hypersonic flight target flow field model and electromagnetic model coupling method. The method comprises: taking an appropriate volume to contain a target and a surrounding flow field assembly model of the volume, carrying out required electromagnetic grid division on the volume, mapping each flow field grid node to the electromagnetic grids, and taking the meanvalue of flow field node data contained in the electromagnetic grid for the grid containing the flow field nodes in the electromagnetic grid to replace the flow field data at the location of the electromagnetic grid; using the existing data electromagnetic grid linear interpolation technology for the remaining electromagnetic grids to obtain flow field data at the locations of the electromagneticgrids; converting the flow field data at locations of all electromagnetic grids into electromagnetic parameters required by the electromagnetic simulation through the formula; and establishing a plasma Drude model, and converting the plasma Drude model into a time domain for simulation and calculation. The coupling method disclosed by the present invention is more reasonable, and can better show the superiority of the time domain algorithm.

Description

technical field [0001] The invention belongs to the field of electromagnetic technology, in particular to a method for coupling a hypersonic flight target flow field model and an electromagnetic model. Background technique [0002] According to the characteristics of the flow field model and the electromagnetic model: the density of the grid in the flow field model is determined by the curvature of the target surface and the interface of the medium. The distribution of the flow field grid is denser at the place where the surface curvature is relatively large or the interface is artificially dense. The rest of the flow field is relatively sparse, and the grid specifications are generally inconsistent. The electromagnetic model grids used in calculation methods such as finite difference in time domain based on hexahedral grids are generally structured grids with uniform specifications and uniform distribution. [0003] The flow field grid model is different from the electroma...

AI Technical Summary

Problems solved by technology

Tetrahedral electromagnetic grids limit the application of methods using hexahedral grid models, such as finite-difference time-domain methods, etc.

If you want to use the time-domain finite difference algorithm based on the hexahedral grid model, you cannot apply this tetrahedral electromagnetic grid, and you cannot give full play to the advantages of this type of algorithm in this field

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