基于有限元的流固共轭传热程序开发验证  

Development and verification of conjugate heat transfer program based on finite element method

作　　者：苏庆吉 李万爱 刘骁[2] SU Qingji;LI Wanai;LIU Xiao(Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China;Institute of Computational Aerodynamics,China Aerodynamics Research and Development Center,Mianyang 621000,China)

机构地区：[1]中山大学中法核工程与技术学院,广东珠海519082 [2]中国空气动力研究与发展中心计算空气动力研究所,四川绵阳621000

出　　处：《中山大学学报（自然科学版）（中英文）》2023年第4期108-115,共8页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家数值风洞外协项目(NNW2020-JT01-037);国家自然科学基金(11872383)。

摘　　要：为实现对共轭传热问题的仿真研究,本文基于有限元算法在MOOSE平台下开发一套用于流固共轭传热问题的计算程序。该程序采用传统连续伽辽金有限元法求解固体区域的结构传热问题,引入SUPG/PSPG稳定算法以解决流体对流-扩散方程中因对流占主导造成的振荡问题以及速度压力失耦问题,采用k-ω湍流模型进行湍流流动求解。对于全场的共轭传热问题,程序采用全耦合隐式格式进行求解。通过与文献中实验及理论结果对比,证明了该程序对于基本流动以及共轭传热问题计算的正确性。研究结果表明,程序计算结果与实验数据、DNS等结果表现出良好的一致性。本研究开发的程序具备不可压流动换热、固体传热、共轭传热等问题的计算能力。In order to simulate the conjugate heat transfer problem;a calculation program for simulating fluid-solid conjugate heat transfer problems is developed on the MOOSE platform based on the finite element algorithm.The traditional continuous Galerkin finite element method is used to solve the structural heat transfer problem in the solid region.The SUPG/PSPG stabilization algorithm is introduced to solve the oscillation problem caused by convection-dominated equation of flow and the problem of velocity and pressure decoupling.The k-ω turbulence model is used to solve the turbulent flow.For the conjugate heat transfer problem in the whole field,the program uses a fully coupled implicit scheme to solve it.The program is validated by comparing with the experimental and theoretical results for basic flow and conjugate heat transfer cases.The results show that the calculation results are in good agreement with the experimental data and DNS results.Therefore,the program developed in this study has the ability to compute incompressible flow with heat transfer,solid heat transfer,conjugate heat transfer,and related problems.

关 键 词：共轭传热 有限元方法 多物理场耦合 湍流模型 验证与确认 

分 类 号：TL334[核科学技术—核技术及应用]