Volume penalization method for solving coupled radiative-conductive heat transfer problems in complex geometries
Volume penalization method for solving coupled radiative-conductive heat transfer problems in complex geometries
复制标题
求解复杂几何形状中辐射-传导耦合传热问题的体积惩罚方法
DOI：
10.1016/j.ijheatmasstransfer.2022.123499
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Y.
中科院分区：
文献类型：
--
作者：
Liu;M.;Hasegawa;Y.
提出并验证了一种基于体积惩罚法的新型浸没边界法。为了考虑固体表面的吸收、反射和发射，在辐射传热和传导传热的控制方程中引入了光滑的源/汇项。所提出的算法成功地实现到一个开源的CFD求解器，OpenFOAM与自适应网格细化，以保证足够精细的网格分辨率附近的固体表面。为验证所提方法的有效性，考虑了纯辐射和传导-辐射组合的基准问题。在各种吸收和发射条件下，本模拟结果与解析解以及现有文献数据在5%左右的误差范围内显示出良好的一致性。除了在精度方面的上级性能之外，本方法不需要在具有任意复杂几何形状的固体表面周围进行特殊处理来施加辐射传热的边界条件，从而在科学和工程问题中具有广泛的适用性。
A novel immersed boundary method for simulating coupled radiative-conductive heat transfer based on a volume penalization method is proposed and verified. A smooth source/sink term is introduced to the governing equations for radiative and conductive heat transfer in order to take into account the absorption, reflection and emission at a solid surface. The proposed algorithm is successfully implemented into an open-source CFD solver, OpenFOAM with adaptive mesh refinement to guarantee sufficiently fine grid resolution near solid surfaces. Benchmark problems of pure radiation and combined conduction-radiation are considered for verifying the proposed method. The present simulation results under various absorption and emission conditions show good agreement with analytical solutions as well as existing literature data within around 5% errors. In addition to its superior performance in terms of accuracy, the present approach does not require special treatments around the solid surface with arbitrary complex geometry to impose boundary conditions for radiative heat transfer, and thereby wide applicability in scientific and engineering problems.