Reactor multi-physical field coupling calculation system and method

Abstract

The invention discloses a reactor multi-physical-field coupling calculation system and method, relates to the field of nuclear reactors, and solves the problem that no mature multi-physical-field tight coupling calculation system exists. According to the invention, the system encapsulates and configures a plurality of calculation programs through an interface layer, and configures corresponding calculation programs through an application program layer according to reactor engineering calculation data types; wherein the interface layer is used for acquiring restart data, the restart data is reactor engineering calculation data imported by the interface layer, and the interface layer is used for constructing a physical field residual expression necessary for JFNK calculation based on an original physical field of the calculation data used for calculation of reactor engineering in the application program layer; transmitting the residual equation of the physical field to a core solving layer; and the interface layer is used for transmitting a physical field solving result between the core solving layer and the application program layer. The method can be used for program development, engineering design and accident analysis and evaluation of reactor engineering based on a multi-physical coupling concept.

Description

technical field [0001] The invention relates to the field of nuclear reactors, in particular to a reactor multi-physical field coupling calculation system and method. Background technique [0002] A nuclear reactor is a device that can maintain a controllable self-sustaining chain fission reaction to realize the utilization of nuclear energy. It consists of a series of complex and interacting phenomena and physical fields. In the design and analysis of nuclear reactor engineering, due to the strong feedback effect of the physical fields involved in physics, thermal engineering, fuel and other disciplines, the traditional design method is to carry out the design sequentially in a certain upstream and downstream sequence within an iterative step. And analysis, feedback the design results to the next iteration step, and achieve the design goal through multiple iterations. [0003] In recent years, higher requirements have been put forward for the economics and safety of nuclea...

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Problems solved by technology

However, in the actual calculation and analysis of reactors, various specialties have developed a large number of special calculation programs, and a single conservation equation cannot achieve the calculation accuracy of special programs, and the discretization methods of each professional conservation equation may be different, and the current multi-physics coupling None of the platforms can provide multiple sets of discrete methods at the same time

[0007] As mentioned above, although the reactor multiphysics tight coupling method based on the JFNK method has been proposed in the prior art, there is no set of reactor multiphysics tight coupling calculation system and method based on the JFNK method + mature calculation program

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