Parallel computing method for solving rate theoretical equation based on exponential time difference format

An equation and rate technology, applied in the field of parallel computing, to achieve the effect of solving fast and improving the speed of solving
CN110660453AActive Publication Date: 2020-01-07CHINA INSTITUTE OF ATOMIC ENERGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA INSTITUTE OF ATOMIC ENERGY
Publication Date
2020-01-07

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Abstract

The embodiment of the invention provides a parallel computing method for solving a rate theoretical equation based on an exponential time difference format. A physical microdefect simulation model isestablished based on a rate theory, and the rate theory has no space-time scale limitation, so that the advantages of the rate theory can be obviously reflected when microstructure evolution under a high damage dose condition is simulated, and then the exponential time difference format is used for solving the main equation, so that the solving result is better in accuracy and higher in precision.
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Description

technical field

[0001] The invention relates to computer physics simulation, in particular to a parallel computing method for solving rate theory equations based on an exponential time difference format. Background technique

[0002] The exponential time-difference scheme retains the exponential integration operation, and the different treatment methods for the integration of the integral factor term and the nonlinear term of the objective equation over time. Exponential Time Difference uses polynomial interpolation to approximate nonlinear terms in the equation, and then performs exact integration on the resulting new integral terms.

[0003] The reaction rate theory is based on the mesoscopic simulation of the mean field, and cannot carry out the atomic scale simulation, but needs the corresponding parameters provided by the atomic scale simulation. At low spatio-temporal scales, the rate theory ignores the spatial correlation and is difficult to simulate accurately. Ther...

Claims

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