Method for greatly shortening microwave heating multi-physical field numerical calculation time

Abstract

The invention discloses a method for greatly shortening the microwave heating multi-physical field numerical calculation time. The method comprises the following steps of A, calculating the minimum value of a multi-physical field coupling variational expression under the boundary giving condition and obtaining a numerical approximate solution of a magnetic filed and an electric field of the boundary value problem in the time-harmonic field; B, reducing the time step of the thermal field numerical calculation in the microwave heating process through the time scale transformation; and C, shortening the time step of the microwave heating process through translational velocity transformation. The method has the advantages that the time step of the thermal field numerical calculation in the microwave heating process is greatly reduced by a finite element method through solution calculation and the use of time scale transformation and translational velocity transformation; the calculating amount of a computer is reduced; the calculation speed of the numerical calculation is accelerated; the calculation time is shortened, so that the work efficiency is improved; and the error problem due to calculation of mass calculation data by the computer is fundamentally solved.

Description

technical field [0001] The invention relates to the field of computational electromagnetics, in particular to a method for greatly shortening the numerical calculation time of microwave heating multi-physics fields. Background technique [0002] With the wide application of multi-physics numerical calculation methods, computer calculation has developed rapidly in practical applications. With the continuous expansion of the application range, especially in large-scale industrial applications, the microwave heating process often generates a large amount of calculation data in the numerical calculation process due to the large device size and material handling capacity, and the excessive calculation load It is unbearable for ordinary computers. At the same time, the huge calculation data will cause the computer to generate a larger error range due to error iterative calculations, resulting in serious distortion or even errors in the results. These factors have brought difficult...

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Problems solved by technology

[0004] The invention discloses a method for greatly shortening the numerical calculation time of microwave heating multi-physics fields, which solves the technical problems of error and calculation speed caused by computer calculation of massive calculation data in the prior art

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