Simulation method and device for solidification process of lead-bismuth alloy in lead-water reaction

A technology of lead-bismuth alloy and lead water, which is applied in the field of nuclear reactors, can solve problems such as incomplete consideration and unreliable simulation results, and achieve the effect of improving reliability

Pending Publication Date: 2022-07-12
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The current numerical simulation of heat transfer in phase transformation during the solidification process of lead-bismuth alloys still has incomplete considerations, resulting in unreliable simulation results.

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  • Simulation method and device for solidification process of lead-bismuth alloy in lead-water reaction
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  • Simulation method and device for solidification process of lead-bismuth alloy in lead-water reaction

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments.

[0033] At present, there are few studies on the solidification mechanism of lead-bismuth alloys under the lead-water reaction, and the consideration of the factors affecting the solidification is not comprehensive enough, and the systematic and intuitive kinetic, thermodynamic and phenomenological models are lacking, which leads to the solidification of lead-bismuth alloys in the lead-water reaction. Simulation simulation reliability is low. In order to improve this problem, the embodiment of the present invention provides a method and device for simulating the solidification process of lead-bismuth alloy in lead-water r...

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Abstract

The invention provides a simulation method and device for a lead-bismuth alloy solidification process in a lead-water reaction, and relates to the technical field of nuclear reactors, and the simulation method comprises the following steps: coupling a preset fluid calculation model, a preset turbulence model and a solidification heat transfer model to establish a simulation environment for lead-bismuth alloy solidification; and obtaining the initial working condition of the lead-water reaction, and carrying out analogue simulation on the solidification phase-change heat transfer process of the lead-bismuth alloy based on the initial working condition in a simulation environment to obtain the distribution information of the lead-water reaction area within the preset time of injection of the high-speed incident water flow. According to the method, composite simulation of the solidification process of the lead-bismuth alloy in the lead-water reaction can be realized, and the reliability of lead-bismuth alloy solidification analogue simulation in the lead-water reaction is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a method and device for simulating the solidification process of a lead-bismuth alloy in a lead-water reaction. Background technique [0002] Lead-based fast reactors usually use liquid lead or lead-bismuth alloy as coolant. However, when a steam generator heat transfer tube rupture (SGTR) accident occurs, water and lead-bismuth alloy will undergo a solidification reaction, resulting in flow blockage in the reactor. This will affect the core and cause serious damage to the core. In order to study the actual consequences and possible influences of the lead-water reaction, it is necessary to study the thermophysical process of the transformation heat transfer during the solidification of lead-bismuth alloys. At present, the numerical simulation of transformation heat transfer in the solidification process of lead-bismuth alloy still has the problem of incomplete considera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/10G06F30/28G06F113/08G06F119/14G06F119/08
CPCG16C20/10G16C20/30G06F30/28G06F2113/08G06F2119/14G06F2119/08Y02E30/30
Inventor 刘晓晶刘达霖邓畅张滕飞
Owner SHANGHAI JIAO TONG UNIV
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