| 用雷诺应力模型计算旋风分离器中气-固两相流动 |
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| 引用本文： | 王海刚,刘石.用雷诺应力模型计算旋风分离器中气-固两相流动[J].工程热物理学报,2004(Z1). |
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| 作者姓名： | 王海刚 刘石 |
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| 作者单位： | [1]中国科学院工程热物理研究所 [2]中国科学院工程热物理研究所 北京 |
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| 基金项目： | 国家自然科学基金资助(No.50076045) |
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| 摘 要： | 针对分离器内部的复杂的三维强旋转、气-固两相湍流运动,采用雷诺应力模型(SSG),利用贴体网格技术,模拟计算了分离器内部流动,并将计算结果与实验数据进行分析、比较。分离器内的固体颗粒运动采用涉及湍流扩散影响的随机轨道模型和确定轨道模型,在流场计算的基础上,模拟了不同直径的颗粒在分离器内的运动规律及颗粒分离效率,并同理论和实验得到的数据进行了比较。
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| 关 键 词： | 旋风分离器 雷诺应力 随机轨道 |
NUMERICAL SIMULATION AND EXPERIMENTAL STUDY ON THE GAS-PARTICLE TWO-PHASE FLOWS IN CYCLONE SEPARATORS |
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| WANG Hai-Gang LIU Shi.NUMERICAL SIMULATION AND EXPERIMENTAL STUDY ON THE GAS-PARTICLE TWO-PHASE FLOWS IN CYCLONE SEPARATORS[J].Journal of Engineering Thermophysics,2004(Z1). |
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| Authors: | WANG Hai-Gang LIU Shi |
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| Abstract: | The three-dimensional complex multiphase turbulent flow in gas-solids cyclone separators was simulated using the differential Reynolds stress equation models (DSM). To account the effect of the stochastic characteristic of the instantaneous gas velocity on the particles, the improved Lagrangian stochastic modei based on the Reynolds stress was adopted, which attributed to the successful pre-diction of the turbulence anisotropy and particle crossing-trajectories effect. Numerical results for the particles trace and collection efficiencies in the cyclone separator were compared with available experimental data and theoretic models. |
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| Keywords: | cyclone separators Reynolds stress Lagrangian stochastic modei |
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