In this paper, we apply a novel immersed boundary method to simulate pore-scale level fluid flow and convective heat transfer in realistic numerically generated open-cell solid foams in a Cartesian computational domain. Five different periodic foam samples of varying porosities (e=[0.877,0.948]) are generated by numerically mimicking the actual foam formation process (minimizing surface area). The step-by-step procedure for generating the periodic foam geometries is presented. The specific surface areas of the generated foams of different porosities are compared with real foam geometries showing a reasonable agreement. The Reynolds number (Re) is varied from Re≈0 (creeping flow) to Re≈500, and finally drag and Nusselt correlations have been proposed. A detailed analysis is presented on the local velocity and temperature field for the fluid-solid interaction in a complex cellular porous medium.

中文翻译：

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使用浸入边界法的真实数值生成随机开孔固体泡沫的阻力和传热闭合

在本文中，我们应用一种新的浸入边界方法来模拟笛卡尔计算域中真实数值生成的开孔固体泡沫中的孔隙级流体流动和对流传热。通过数值模拟实际泡沫形成过程（最小化表面积）生成五种不同孔隙率（e=[0.877,0.948]）的不同周期性泡沫样品。介绍了生成周期性泡沫几何形状的分步过程。将生成的不同孔隙率泡沫的比表面积与真实泡沫几何形状进行比较，显示出合理的一致性。雷诺数 (Re) 从 Re≈0（蠕动流）变化到 Re≈500，最后提出了阻力和 Nusselt 相关性。