雷诺数
努塞尔数
多孔性
层流
粒子(生态学)
机械
传热
阻力
材料科学
粒径
阻力系数
热力学
动量(技术分析)
物理
化学
湍流
复合材料
地质学
经济
物理化学
海洋学
财务
作者
Haishan Miao,Hao Zhang,Xizhong An,Chunhai Ke,Aibing Yu
标识
DOI:10.1016/j.powtec.2021.09.045
摘要
This study focuses on the combined effect of particle shape and porosity on the momentum and heat transfer of granular matter under laminar flow. Particle-resolved direct numerical simulations (PR-DNS) are carried out at different working conditions. Numerical results show that both the particle shape (via the aspect ratio, Ar, of the spheroid) and porosity play important roles in affecting the drag coefficient (Cd) and average Nusselt number (Nu). The influence of particle shape on Cd and Nu is regardless of the particle porosity. It is found that the Cd decreases with the increase of Ar for a given Reynolds number (Re). The Nu decreases with the increase of Ar under high Reynolds number (100
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