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Method for verifying applicability of reactor physical computation programs

A physical calculation and reactor technology, applied in the field of nuclear reactor physical calculation program applicability verification, can solve the problems of high engineering cost, inability to meet the rapid and safe development of nuclear energy, and long construction period

Active Publication Date: 2017-06-13
XI AN JIAOTONG UNIV
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Problems solved by technology

The construction of the new nuclear reactor criticality experiment system not only has high engineering cost and long construction period, but also has certain risks, which is far from meeting the rapid and safe development needs of nuclear energy.

Method used

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  • Method for verifying applicability of reactor physical computation programs
  • Method for verifying applicability of reactor physical computation programs
  • Method for verifying applicability of reactor physical computation programs

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Experimental program
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Embodiment Construction

[0057] Based on the sensitivity and uncertainty analysis technology, the present invention adopts the generalized linear least squares method, and only uses the actual measurement results of the existing nuclear reactor criticality experiment system without building a new type of nuclear reactor criticality experiment system to realize the verification of the nuclear database. Adapted and used to evaluate new nuclear reactor systems k eff The optimal estimated value of "actually measured results" is used to verify the applicability of the nuclear reactor physics calculation program, and the present invention includes the following aspects:

[0058] 1) Using sensitivity analysis technology, calculate and analyze the effective multiplication coefficient k of the criticality experiment system and the new nuclear reactor system eff A vector of relative sensitivity coefficients with respect to the multigroup cross section;

[0059] 2) Based on sensitivity and uncertainty analysis ...

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Abstract

The invention discloses a method for verifying applicability of reactor physical computation programs. The method includes 1, analyzing sensitivity of existing critical experiment systems and novel nuclear reactor systems to obtain relative sensitivity coefficient vectors of effective multiplication coefficients; 2, computing correlation coefficients of the various critical experiment systems and the novel nuclear reactor systems and selecting the critical experiment systems meeting requirements of similarity limit; 3, computing relative adjustment amounts of multi-group cross sections to minimize integral deviation between computation results of Monte-Carlo programs for the effective multiplication coefficients of the selected critical experiment systems and measurement results; 4, adjusting computation results of Monte-Carlo programs for the effective multiplication coefficients of the novel nuclear reactor systems and utilizing the computation results as the optimal estimation values of the 'measurement results'. The relative sensitivity coefficient vectors of the effective multiplication coefficients are related to the multi-group cross sections. The method can be used for verifying the applicability of the to-be-verified nuclear reactor physical computation programs to designing and analyzing the novel nuclear reactor systems.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor safety, and relates to a method for verifying the applicability of nuclear reactor physical calculation programs. Background technique [0002] The nuclear reactor is a multi-scale, multi-physics coupled complex system, and calculation programs are widely used in the design analysis and research of nuclear reactors. Among them, reactor physical calculation is the basis of nuclear reactor system design, safety analysis and performance evaluation, and its calculation results will directly affect the safety and economy of nuclear reactors. Therefore, the reactor physics calculation program has a strict verification and confirmation method: firstly, the solution accuracy of the calculation model in the program is checked by comparing with the analytical results; and then the correctness of the simulation results of the program is checked by comparing with the measured results of a large number...

Claims

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Application Information

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IPC IPC(8): G06F11/36
CPCG06F11/3608
Inventor 郑友琦万承辉曹良志吴宏春
Owner XI AN JIAOTONG UNIV
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