Multi-physics field coupling method for constructing digital prototype of shielded nuclear main pump

Abstract

The multi-physical field coupling method for constructing a shielded nuclear main pump digital prototype belongs to the design and manufacture of nuclear reactor coolant pumps. Construction steps: 1. Based on the flow field, temperature field, and electromagnetic field associated with the nuclear main pump components, considering the geometry and material properties of the components, determine the calculation domains and boundary conditions of each physical field, establish a mathematical model of each physical field, and discretize it through finite elements Obtain the solid model of the multi-physics field, and generate the multi-physics field structural modeling module; 2. Based on the passive physical process of the nuclear main pump, use the partial iteration method to perform coupling calculations on the multi-physics fields, and generate a multi-physics field coupling calculation module. Build a 3D digital prototype of the nuclear main pump on the physical model; 3. Receive the 3D digital prototype through the performance analysis module of the nuclear main pump, call the multi-physical field coupling calculation data under the operating parameters of the nuclear main pump as input, and output the hydraulic characteristics and energy consumption of the nuclear main pump Properties, heat transfer characteristics, simulation results for the operational load database. Advantages: The working characteristics and performance analysis of the nuclear main pump are accurate.

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. Background technique [0002] 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 conditions of tr...

AI Technical Summary

Problems solved by technology

[0006] 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 coupling effect of multiple physical fields in actual working conditions, and cannot accurately evaluate the hydraulic power and performance of the nuclear main pump. Consumption, heat transfer and other characteristics of the problem

Images