| 粗颗粒两相流计算方法研究 |
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| 引用本文： | 董喆,刘少军,胡小舟,文豪,彭舸.粗颗粒两相流计算方法研究[J].海洋工程,2018,36(3):110-116. |
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| 作者姓名： | 董喆 刘少军 胡小舟 文豪 彭舸 |
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| 作者单位： | 中南大学机电工程学院;中南大学深圳研究院 |
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| 基金项目： | 国家重点研发计划（2016YFC0304103 4）；深圳市基础研究项目（JCYJ20150929102555935）；深圳市重大项目扶持计划项目（HYZDFC20140801010002） |
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| 摘 要： | 针对具有颗粒粒级跨度大且粒径大特点的固液两相流系统,如深海采矿系统等,开发新型粗颗粒—均质浆体计算模型,该模型采用欧拉—拉格朗日计算法,大粒径颗粒视为固相粗颗粒,其余视为细颗粒与海水组成液相均质浆体。固—液相间滑移速度v_(slip)作为粗细颗粒划分标准,通过联立颗粒雷诺数Re_p,液相对颗粒绕流阻力系数C_d,颗粒粒径d_p等参数,得到滑移速度v_(slip)与颗粒粒径d_p的相关函数,获得粗细颗粒的划分粒径,进而得到两相流控制方程。利用CFD软件,使用该方法对粗颗粒固—液两相流垂直管提升系统进行仿真计算,并将所获得的仿真结果与已发表成果进行对比,发现数据较为吻合,从一定程度上验证了该计算模型的准确性。
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| 关 键 词： | 固—液两相流 粗颗粒 滑移速度 深海采矿系统 颗粒粒径 |
Analysis of computing method for coarse particle two-phase flow |
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| DONG Zhe,LIU Shaojun,HU Xiaozhou,WEN Hao and PENG Ge.Analysis of computing method for coarse particle two-phase flow[J].Ocean Engineering,2018,36(3):110-116. |
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| Authors: | DONG Zhe LIU Shaojun HU Xiaozhou WEN Hao and PENG Ge |
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| Institution: | College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China,1. College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; 2. Shenzhen Research Institute, Central South University, Shenzhen 518057, China,College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China,College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China and College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| Abstract: | A coarse particle-homogeneous slurry computational model is developed for the solid liquid two phase flow system with a large range of particle sizes, such as deep sea mining system. This model considers the large-size particles as coarse particles, and the others as the homogeneous slurry with the liquid phase. The slip velocity vslip between particles and liquid is considered as the standard for dividing the solid phase. The parameters of particle Reynolds number Rep, resistance coefficient of particles Cd and diameter of particles dp and so on are simulated to gain the correlation function of vslip and dp. This function is used to find the limiting particle size diameter which classifies the coarse particle and other particles. And then, the governing equation of this computation model is derived. The results of coarse particles in the vertical pipe simulated by CFD are compared with other publishied achievements with good agreement, showing that this computational model is accurate. |
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| Keywords: | solid-liquid two phase flow coarse particles slip velocity deep sea mining system particle size |
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