基于自适应源项离散的点核积分方法计算效率优化研究

Abstract

Abstract: The point kernel integration method has the problem that it takes a long time to calculate complex scene with multiple source terms or the situation that the radiation field needs to be dynamically updated. To solve this problem, this study employs the point kernel integration program CIRPDose to simulate and calculate the variation law of errors resulting from the split up of source terms (a total of five types, including cylindrical source and cuboid source, etc.) in relation to the distance between the calculated point and the source, and proposes an efficiency optimization method for the point kernel integration based on adaptive source term split up. After integrating the method into the CIRPDose program, the method was tested through customized examples. The test results show that the calculation time of radiation field for each type of source term under the adaptive split up method is reduced by 96.77%, as opposed to the conventional fixed number split up method. Moreover, the maximum average deviation in the calculated results is only 3.19%, which verifies the reliability and effectiveness of the proposed method. The research presented in this paper can provide technical support for the rapid calculation of 3D gamma radiation fields in nuclear facilities.

Key words: gamma radiation field calculation, point kernel integration method, calculation efficiency optimization, source term split up

CLC Number:

TL75+1

ZHAO Yuan, LONG Zeyu, LI Hua, SONG Peitao, WEI Jiafu, LIU Liye, CHEN Ling. Calculation efficiency optimization of point kernel integration method based on adaptive source term split up[J].RADIATION PROTECTION, 2024, 44(5): 490-498.

References

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Calculation efficiency optimization of point kernel integration method based on adaptive source term split up

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