Rapid mapping method for plasma-electromagnetic wave coupling model grid of high-speed aircraft

A high-speed aircraft and plasma technology, applied in the field of electromagnetic computing, can solve problems such as large errors

Pending Publication Date: 2022-07-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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AI Technical Summary

Problems solved by technology

[0005] 1. In areas where the flow field is relatively dense, the interpolation method has a large error
[0006] 2. In areas where the flow field is relatively sparse, the average value method has a large error

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  • Rapid mapping method for plasma-electromagnetic wave coupling model grid of high-speed aircraft
  • Rapid mapping method for plasma-electromagnetic wave coupling model grid of high-speed aircraft
  • Rapid mapping method for plasma-electromagnetic wave coupling model grid of high-speed aircraft

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Embodiment Construction

[0056] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0057] The invention provides a grid fast mapping method for a plasma-electromagnetic wave coupling model, which realizes parameter mapping from flow field grids to various electromagnetic grids such as tetrahedrons and hexahedrons, has the characteristics of accuracy and high efficiency, and makes plasma-electromagnetic Numerical simulation of electromagnetic wave coupling is more flexible and reliable. This method establishes a fast search tree and completes grid mapping through interpolation and averaging methods, which can realize fast and accurate mapping of flow field grids with different sizes and densities to electromagnetic grids, which is beneficial to the interaction between high-speed flying plasma and electromagnetic waves. numerical simulation.

[0058] The present invention provides a high-speed flying plasma-electromagnetic wave couplin...

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Abstract

The invention discloses a rapid grid mapping method for a plasma-electromagnetic wave coupling model of a high-speed aircraft, which is beneficial to accurate numerical simulation of the plasma-electromagnetic wave coupling model of the high-speed aircraft. The method comprises the following steps: firstly, constructing a plasma-electromagnetic wave coupling model, respectively establishing a flow field rapid search tree and an electromagnetic rapid search tree, and searching a flow field grid unit where any electromagnetic grid node is located by using the flow field rapid search tree; after the flow field grid units are obtained through searching, parameters on nodes of the flow field grid units are interpolated to internal electromagnetic grid nodes. And searching an electromagnetic grid unit where any flow field grid node is located by using an electromagnetic quick search tree. And circulating each electromagnetic grid unit to complete the mapping of the flow field parameters from the flow field grid to the electromagnetic grid. According to the electromagnetic simulation frequency and the electromagnetic grid flow field parameters, electromagnetic parameters on the electromagnetic grid are calculated, and rapid grid mapping of the plasma-electromagnetic wave coupling model is completed.

Description

technical field [0001] The invention relates to the technical field of electromagnetic computing, in particular to a fast mapping method for a plasma-electromagnetic wave coupling model grid of a high-speed aircraft. Background technique [0002] During the flight of the hypersonic target, the gas in its head is violently compressed to form a shock wave, and its surface is violently rubbed with the surrounding air, ionizing the gas to form a plasma. To numerically simulate the plasma-electromagnetic wave coupling, it is first necessary to numerically simulate the surface flow field of the aircraft to obtain the distribution parameters of the plasma, such as temperature, pressure, electron density and collision frequency, and then to establish an electromagnetic analysis model for the plasma. Map the data of the flow field grid to the electromagnetic grid, and perform electromagnetic simulation together with the target. [0003] The flow field parameters of the plasma change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/23G06F30/25G06F30/28G06F111/10G06F113/08G06F119/14
CPCG06F30/15G06F30/23G06F30/25G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 黄晓伟刘金钢郭琨毅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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