| 惯性颗粒所见被动标量统计特性的DNS与模型研究 |
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| 引用本文： | 易超,刘亚明,贺铸,柳朝晖,郑楚光.惯性颗粒所见被动标量统计特性的DNS与模型研究[J].工程热物理学报,2011(11):1869-1872. |
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| 作者姓名： | 易超 刘亚明 贺铸 柳朝晖 郑楚光 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室;广东电网公司电力科学研究院; |
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| 基金项目： | 国家重大基础研究专项基金项目(No.2010CB227004); 国家自然科学基金项目(No.50936001;No 50976042;No.51021065) |
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| 摘 要： | 本文采用DNS方法，对惯性颗粒所见各向同性湍流中具有平均标量梯度的被动标量场统计特性进行了研究。结果表明：惯性对颗粒温度脉动强度，两相温度关联，自相关特性以及颗粒热流与两相交叉热流的统计特性具有明显的影响。在PDF方法的框架下，系统地推导了非等温气固两相流的PDF方程，且基于朗之万随机体系对方程进行了封闭，并利用前面的...
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| 关 键 词： | 被动标量 惯性颗粒 非等温气固两相流 直接数值模拟 PDF方法 |
A Study of Passive Scalar Characteristics Along Inertial Particle Trajectory and its Dynamical Model |
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| YI Chao LIU Ya-Ming He Zhu LIU Zhao-Hui ZHENG Chu-Guang.A Study of Passive Scalar Characteristics Along Inertial Particle Trajectory and its Dynamical Model[J].Journal of Engineering Thermophysics,2011(11):1869-1872. |
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| Authors: | YI Chao LIU Ya-Ming He Zhu LIU Zhao-Hui ZHENG Chu-Guang |
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| Institution: | YI Chao~1 LIU Ya-Ming~2 He Zhu~1 LIU Zhao-Hui~1 ZHENG Chu-Guang~1 (1.State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China,2.Electric Power Research Institute of Guangzhou Power Grid Corporation,Guangzhou 510600,China) |
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| Abstract: | In this paper,statistics of passive scalar along inertial particle trajectory in homogenous isotropic turbulence with a mean scalar gradient are investigated by using of DNS.The results show that,the St number has effect on the scalar variance of particle,the scalar correlation and the cross heat flux.In the framework of PDF method,we derived the PDF equation of non-isothermal gas/particle flow,and closed it based on the random Langevin model system.As the results show that the computed results,based on thi... |
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| Keywords: | passive scalar inertial particle non-isothermal gas-particle flow DNS PDF method |
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