Engineering multiphysics coupling analysis method

Abstract

The invention discloses an engineering multiphysics coupling analysis method, which comprises the following steps: (1) acquiring data information related to load transfer in different physical field numerical models; (2) setting load transfer relations of different physical field numerical models, setting the solving sequence of physical field numerical models of different computer aided engineering (CAE) analysis systems, and setting load transfer, convergence and control laws; (3) performing load data conversion and transfer for different physical field numerical models in real time on the basis of load transfer relations in an iterative loop mode according to the set solving sequence; and (4) displaying calculation results in different physical models. According to the method, functions of the existing CAE software are used to the maximum extent, the existing CAE software is not required to be modified, research and development costs and software usage costs are saved, simultaneously the usability of coupling field analysis software is improved, so that the method has a positive effect on application and popularization of the engineering multiphysics analysis in industrial design and is beneficial to performance analysis and innovative design of complex industrial issues.

Description

technical field [0001] The invention belongs to the field of simulation, and is particularly applicable to a method for performing multi-physical field coupling simulation analysis on the characteristics and performance of components in the fields of automobiles, aerospace, ships, heavy industries, railway locomotives, equipment manufacturing, electronics, and biomedicine. Background technique [0002] In the fields of automobile, aerospace, shipbuilding, heavy industry, railway locomotive, equipment manufacturing, electronics, biomedicine, etc., engineering numerical analysis and multi-physical field coupling simulation analysis of the characteristics and performance of equipment and components are required. For example, when the motor of a new energy vehicle is running, it involves electromagnetic field heat generation, fluid heat dissipation, electromagnetic torque, and rotor dynamics. The interactions between electromagnetic fields, rotor dynamics, fluid fields, temperat...

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Problems solved by technology

[0004] The main limitation of the existing strong coupling method is that different physical models need to be integrated under the same software, which cannot make full use of the functions of existing commercial software. At the same time, the integrated overall matrix condition number is poor, and the large scale of unknowns is not conducive to efficient parallel technology. realization of

However, the data or information transfer method adopted by the existing cross-program weak coupling implementation method is based on network information transfer technology (such as Socket technology), and at the same time, synchronization points need to be set inside different programs. The main limitations are: 1) need Connect the existing CAE software with the library file functions provided by the coupling interface; 2) It is necessary to add the data acquisition and data storage functions in a certain format required by the coupling interface software, and it needs to be written separately for different coupling interfaces; 3) It needs to be added to the existing Set the synchronization point under the program and insert the corresponding data access function at the synchronization point

The above work not only requires the participation of professional R&D personnel, but also increases the difficulty of use and the burden of technical support for users, resulting in the limitation of the coupling of different loads across multiple programs.

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