Method for constructing shielded nuclear main pump digital prototype through multi-physical field coupling

Abstract

The invention discloses a method for constructing a shielded nuclear main pump digital prototype through multi-physical-field coupling, and belongs to design and manufacturing of nuclear reactor coolant pumps. The method comprises the following construction steps: 1, according to a flow field, a temperature field and an electromagnetic field associated with a nuclear main pump part, considering geometric and material properties of the part, determining calculation domains and boundary conditions of all physical fields, establishing mathematical models of all the physical fields, obtaining entity models of multiple physical fields through finite element discretization, and generating a multi-physical-field structure modeling module; 2, based on the passive physical process of the nuclear main pump, performing coupling calculation on the multiple physical fields by adopting a partial iteration method to generate a multi-physical-field coupling calculation module, and constructing a three-dimensional digital prototype of the nuclear main pump on the solid model; and 3, receiving the three-dimensional digital prototype through a nuclear main pump performance analysis module, calling multi-physical field coupling calculation data under nuclear main pump operation parameters as input, and outputting simulation results of a nuclear main pump hydraulic characteristic database, an energy consumption characteristic database, a heat transfer characteristic database and an operation load database. The method has the advantage of accurate analysis of working characteristics and performance of the nuclear main pump.

Description

technical field [0001] The invention relates to a multi-physics field coupling construction method for a digital prototype of a shielded nuclear main pump, which belongs to the field of design and manufacture of nuclear reactor coolant pumps. [0002] technical background [0003] The nuclear main pump is the equipment that drives the circulation of the high-temperature, high-pressure and high-radioactive working medium in the nuclear island, transfers the heat energy of the nuclear fission of the reactor core to the steam generator to generate steam, and drives the steam turbine to generate electricity. It is also the only continuous high-speed rotating equipment in the nuclear island. As a part of the pressure-bearing boundary of the primary circuit, the nuclear main pump is required to operate efficiently and stably under various complex working conditions, without unplanned outages, and the working medium must be strictly free from external leakage. Under extreme conditio...

AI Technical Summary

Problems solved by technology

[0007] Purpose and task of the present invention: to overcome the existing nuclear main pump performance simulation numerical model which only considers the effect of one or two physical fields, fails to fully consider the cou...

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