| 稀疏气固两相槽道湍流中颗粒受力的理论和数值分析 |
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| 作者姓名： | 李振中 魏进家 宇波 |
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| 作者单位： | 1.西安交通大学动力工程多相流国家重点实验室, 西安 710049;2.北京石油化工学院机械工程学院, 北京 102617 |
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| 基金项目： | 国家自然科学基金（51225601）资助 |
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| 摘 要： | 从理论分析和数值计算两个方面对稀疏气-固两相湍流中的颗粒所受的各种相间力的相对大小进行研究。颗粒受力由Basset-Boussinesq-Oseen方程描述，同时考虑剪切升力和旋转升力。研究结果表明，在相间力的计算公式适用范围内，通过频率分析和量级分析确定各相间力的相对大小具有较高的准确度。从颗粒所受各相间力随时间变化的模拟结果来看：除拖曳力和重力外，在主流和翼展方向上，Basset力比较重要；而在壁面法向上，拖曳力、剪切升力和Basset力均比较重要。
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| 关 键 词： | 湍流 两相流 颗粒受力 理论分析 数值模拟 |
| 收稿时间： | 2016-04-18 |
| 修稿时间： | 2016-06-01 |
Theoretical and numerical analyses of interphase forces in dilute particle-laden channel turbulence |
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| Authors: | LI Zhenzhong WEI Jinjia YU Bo |
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| Institution: | 1.State Key laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;2.School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China |
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| Abstract: | We investigated the relative importance of interphase forces using theoretical method and direct numerical simulation, respectively. The particle motion was described by Basset-Boussinesq-Oseen equation, and the lift force and Magnus force were also considered. It was found that the frequency analysis and dimensional analysis appropriately predicted the importance of the interphase forces relative to the drag force. In these analyses, the parameters of particle-laden flow were within the scope of the calculation formula for different forces. In the streamwise and spanwise directions, Basset force, drag force, and gravity were important. However, drag force, lift force, and Basset force were significant in the wall-normal direction. |
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| Keywords: | turbulence particle-laden flow interphase force theoretical analysis numerical simulation |
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