A reactor multiphysics coupling computing system and method

Abstract

The invention discloses a reactor multi-physics field coupling calculation system and method, relates to the field of nuclear reactors, and solves the problem that there is no mature multi-physic field tight coupling calculation system. In the present invention, the system encapsulates and configures various calculation programs through the interface layer, and configures the corresponding calculation programs through the application program layer according to the type of reactor engineering calculation data; the interface layer is used to obtain restart data, and the restart data is the interface Layer imported reactor engineering calculation data, the interface layer constructs the necessary physics residual expressions for JFNK calculations based on the original physics of the calculation data used for calculation by Reactor Engineering at the application layer, and passes the physics residual equations to The core solution layer; the interface layer is used for transferring the physical field solution results between the core solution layer and the application layer. The invention can be used for program development, engineering design, accident analysis and evaluation of reactor engineering based on the concept of multi-physics coupling.

Description

technical field [0001] The invention relates to the field of nuclear reactors, in particular to a reactor multi-physics field coupling calculation system and method. Background technique [0002] A nuclear reactor is a device that can maintain a controllable self-sustaining chain of fission reactions for 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 in a certain upstream and downstream sequence within an iterative step. With analysis, the design results are fed back to the next iteration step, and the design goals are achieved through multiple iterations. [0003] In recent years, higher requirements have been put forward on the economics and safety of nuclear react...

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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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