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Processing method of complex multi-region grids in space advancing solution

A space propulsion and grid technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of cumbersome necessary information, error-prone, and affecting the application of space propulsion programs, so as to avoid human errors and improve the ease of use. Usability, the effect of simplifying global numbering operations

Active Publication Date: 2019-01-18
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For simple grids, this information can be manually generated. If the grid is very complex, manually generating the necessary information will be very cumbersome and error-prone. Every time the number of grids or the topological relationship changes, the relevant information must be recalculated, which seriously affects the space. Application of Advancement Program

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  • Processing method of complex multi-region grids in space advancing solution
  • Processing method of complex multi-region grids in space advancing solution
  • Processing method of complex multi-region grids in space advancing solution

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Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] The embodiment of the present invention provides a method for automatic processing of multi-region grids in space advancing solution, see Figure 1-4 , which includes the following steps:

[0015] Step 101, by reading the CGNS or Gridn boundary format to obtain the grid topological relationship;

[0016] Step 102, transforming the topological relationship of the grid into a weighted directed graph, and the weighted directed graph is represented by an adjacency matrix;

[0017] Specifically, firstly, the topological relationship of the multi-region docking grid is transformed into a weighted directed graph. Such as figure 2 As shown, the weighted directed graph is represented by an adjacency matrix. The matrix element (i, j) indicates the connection relationship between block i and block j. If two blocks are connected throug...

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Abstract

The invention discloses a handling method of complex multi-region grids in space marching solution. The method includes weighted directed graphed of grids topological relation, serial numbers globalization of flow grids, a shortest route search algorithm and a subdivision mode based on I-shaped grid global serial numbers. By the handling method of complex multi-region grids in space marching solution, for the grids calculation problem of complex multi-region structures in the space marching process such as proprietary network system (PNS) and the like, manual operation is no need for modifying boundary information, required segmentation information of flow direction grids of space marching process can be automatically generated, high efficiency solving and complex shade flowing of space marching process are guaranteed, and the usability of the space marching process is improved.

Description

technical field [0001] The invention relates to the automatic processing of complex multi-region grids of space propulsion programs such as PNS. Background technique [0002] The PNS or Euler equation space propulsion program can be used to efficiently and quickly obtain the aerodynamic performance of supersonic vehicles, and is an ideal tool for rapid aerodynamic performance evaluation in the initial stage of aircraft design. Although this type of tool has high calculation efficiency, it is poorly adaptable to complex multi-block grids. During the use process, the generated grid information is often required to be reprocessed, and the calculation preparation is cumbersome, which greatly inhibits the engineering personnel. Use enthusiasm. [0003] Such as figure 1 The flow direction shown in the block grid, the calculation of the space propulsion program needs to be carried out in two stages. Firstly, the flow field of block 1 is calculated. After advancing the calculatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 王利
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS