Irregular Grid Mapping Method in Coupling Calculation of Electromagnetic Field-Flow Field-Temperature Field

Abstract

A special-shaped grid mapping method in electromagnetic field-flow field-temperature field coupling calculation, the method includes the following steps: 1) establishing a flow field-temperature field calculation model; 2) reading node coordinate values ​​of discrete units of each model; 3) Re-establish the geometric model of the research object in the calculation of the electromagnetic field, discretize the model into a triangular finite element grid, and perform numerical calculation of the electromagnetic field; 4) Map the power loss to each unit in the temperature field; 5) Obtain the mapping correction coefficient; 6) Load the corrected power loss density of each unit as a load into the temperature field for calculation, and obtain the temperature result; thus, the power loss of each unit in the temperature field is obtained. The special-shaped grid mapping method in the coupling calculation of electromagnetic field-flow field-temperature field provided by the present invention can realize data transfer between different physical fields using different types of grids, greatly reduce the number of grids, and improve calculation time and accuracy .

Description

technical field [0001] The invention relates to a grid mapping method, in particular to a special-shaped grid mapping method in electromagnetic field-flow field-temperature field coupling calculation. Background technique [0002] The most prominent contradiction in the multi-physics field coupling system is the different characteristic requirements of each physics field for grid discretization and the data mapping between grids. The traditional processing methods are divided into two types. When solving each physical field separately, if different finite element models are established according to their respective characteristic methods, it is impossible to directly read the calculation results of the units or nodes in a one-to-one correspondence during coupling. Using the average load loading method, especially for the real-time solution of time-domain transient multi-physics field coupling problems (especially containing medium motion, fluid flow, etc.), this loading meth...

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a special-shaped grid mapping method in the electromagnetic field-flow field-temperature field coupling calculation, and propose a special-shaped grid mapping method to deal with the data transfer problem between the inconsistent grids of the overall model in the coupling field analysis , to solve the problem that different physical fields have different requirements for grid subdivision accuracy and shape, and can realize data transfer between different physical fields using different types of grids, greatly reducing the number of grids, and improving calculation time and accuracy

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