Hypersonic flight target flow field model and electromagnetic model coupling method

A hypersonic, flying target technology, applied in the field of electromagnetism, can solve problems such as the inability to exert its advantages and the inability to apply electromagnetic grids, and achieve the effects of feasibility and rationality, accurate and reliable calculation results, and simple and reasonable simulation process.

CN108170948AActive Publication Date: 2018-06-15XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-15

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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.
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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...

Examples

Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036]The basic idea of ​​the method for coupling the hypersonic flight target flow field model and the electromagnetic model of the present invention is: two different methods are adopted in the coupling process: average value method and interpolation technology. Take an appropriate volume to include the target and its surrounding flow field combination model, and divide the volume into the required electromagnetic grid, map each flow field grid node to the el...