Backward facing step: from fluid flow to conjugate heat transfer with the coupling library preCICE

C G Caccia, M Corti, A Della Torre, P Masarati
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引用次数: 0

Abstract

The Backward Facing Step geometry is a widely used benchmark problem in Computational Fluid Dynamics literature that is exploitable to validate models, solution methods, and software implementations. Despite a simple geometry, it shows phenomena like separation, reattachment, and re-circulation zones, under different flow conditions (i.e. different Reynolds number or turbulence parameters) it gives different measurable results, suitable for benchmarking activities [1]. Also regarding heat transfer analysis, the backward facing step can be used to investigate a wide variety of operating conditions (both for simple heat transfer cases and coupling heat transfer between the fluid region and a neighboring solid region giving rise to a more complex conjugate heat transfer model) [2]. This work uses the backward facing step as a test case to validate a numerical model built with the open-source Software OpenFOAM 10. The fluid and solid subdomains are connected through the open-source coupling library preCICE [3]. The results, taken from simulations carried out by the authors, show good agreement with the data available in the literature.
后向步骤:利用耦合库 preCICE 从流体流动到共轭传热
后向阶梯几何是计算流体力学文献中广泛使用的基准问题,可用于验证模型、求解方法和软件实现。尽管几何形状简单,但它显示了分离、重新附着和再循环区等现象,在不同的流动条件下(即不同的雷诺数或湍流参数),它给出了不同的可测量结果,适用于基准测试活动[1]。在传热分析方面,后向步骤也可用于研究各种运行条件(包括简单的传热情况,以及流体区域和邻近固体区域之间的耦合传热,从而产生更复杂的共轭传热模型)[2]。本研究将后向步骤作为一个测试案例,以验证使用开源软件 OpenFOAM 10 建立的数值模型。流体和固体子域通过开源耦合库 preCICE 连接[3]。作者的模拟结果与文献中的数据显示出良好的一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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