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Topological optimization method based on Matlab and CFX combined solving platform

A topology optimization and platform technology, applied in design optimization/simulation, geometric CAD, special data processing applications, etc., can solve the problems of slow calculation speed, inconvenient data transmission, difficult to use, etc., to achieve light weight, reduced optimization solution The effect of time and energy dissipation is small

Active Publication Date: 2018-06-05
SHAANXI AVIATION ELECTRICAL
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Problems solved by technology

[0010] Special software for topology optimization (such as Freefem++, Optistruc, Tosca, etc.) is slow in calculation speed and time-consuming when dealing with complex optimization problems (such as aviation motors), and it is not widely used software, which is not easy to use, and it is not easy to use commonly used software. data transmission
How to solve the fluid topology optimization problem with commonly used software in the aviation field is the starting point for the present invention to consider

Method used

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  • Topological optimization method based on Matlab and CFX combined solving platform
  • Topological optimization method based on Matlab and CFX combined solving platform
  • Topological optimization method based on Matlab and CFX combined solving platform

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, and the embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0029] Such as figure 1 As shown, when the present invention optimizes the structure and shape, the goal that needs to be optimized is listed as the objective function, and the relevant constraint equations are determined. Matlab first initializes the relevant constraint equations, reads the initial field information without the source item, and performs the source Item coefficient calculation, and then Matlab outputs the calculation result of the source item coefficient for the Fortran program to read, and then input it into CFX, and then CFX solves the flow field, and outputs the solution result in the required format to the required path, Matlab Read the CFX result file for subsequent calculation of the objective function, solution of the conjugate equation...

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Abstract

The invention provides a topological optimization method based on a Matlab and CFX combined solving platform. The topological optimization method mainly includes (1), calling a CFX solver to perform fluid simulation calculation automatically by the Matlab; (2), setting up a dynamic link library to enable an application program to call functions not belonging to executable codes, solving the problem that the Fortran program cannot be recognized by the CFX directly and ensuring that source item information can be transferred to the CFX smoothly; (3), by the Matlab, calling a CFX postprocessing module to export calculation results in a specific format and from a specific patch, reading the calculation results and performing follow-up calculation. The topological optimization method has the advantages that two common softwares, the Matlab and the CFX, are combined together, the Matlab is used for topological optimization algorithm control, the CFX is used for flow field solving, an interface is set up, and the combined solving platform is established, so that mutual calling and data transfer between the Matlab and the CFX are achieved; the advantages of the two softwares are utilized,and optimization solving time can be shortened remarkably while multi-objective optimization can be realized.

Description

technical field [0001] The invention belongs to the field of shape optimization and topology optimization, and relates to a new joint solution platform and a new shape optimization design method for aeronautical generators. The platform combines Matlab and CFX for mutual calling and data transfer to solve complex shape optimization or multi-objective shape Optimized design. Background technique [0002] Aviation generators have the characteristics of small size, high power density, and high speed. The temperature rises significantly during operation, which directly affects the life, safety and reliability of the motor. The heat dissipation problem caused by the large unit volume loss and small heat dissipation area of ​​aero-generators often becomes the bottleneck restricting the development of motors. In order to reduce the flow resistance, increase the heat dissipation, and optimize the heat dissipation capacity of the motor, it is necessary to optimize the structural sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 张卓飒刘磊姚勋段晓丽张昌盛
Owner SHAANXI AVIATION ELECTRICAL
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