Numerical simulation of shock wave problems with the two-phase two-fluid model

被引:7
作者
Liu, Fayue [1 ]
Chen, Huandong [1 ]
Chen, Jiayue [1 ]
机构
[1] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, 2 Daxue Rd, Zhuhai 519082, Peoples R China
关键词
Two-fluid model; Shock tube; Water faucet; One-step coupled solution; PROPAGATION PHENOMENA; PRESSURE WAVES; IMPLEMENTATION; SYSTEM; RESOLUTION;
D O I
10.1016/j.pnucene.2020.103259
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
The accurate evaluation of the rapid pressure wave propagations in reactor flow systems is an important and challenge issue for reactor safety. In order to simulate pressure wave propagations in the two-phase flow system, this paper presents a new two-fluid numerical solution method for solving the two-phase flow process. A numerical convenient set of equations and the associated one-step coupled solution method are proposed for the model. The field equations are devised from the RELAP5 code, but they have great effectiveness in forming a coupled matrix equation. All the unknown variables of the flow system can be obtained through directly solving the coupled matrix equation. The proposed model is applied to simulate the shock wave problems, i.e. the classical shock tube problem and the water faucet problem. The stability and convergence performance of the simulation results have been verified with analytical data and RELAP5 results. The numerical results demonstrate that the new model is capable and accurate in capturing the transient shock wave propagation of single- and two-phase flows.
引用
收藏
页数:11
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