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Large Eddy Simulation of Particle Wake Effect and RANS Simulation of Turbulence Modulation in Gas-Particle Flows
  • ISSN号：1004-9541
  • 期刊名称：《中国化学工程学报：英文版》
  • 时间：0
  • 分类：O359[理学—流体力学;理学—力学]
  • 作者机构：[1]Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China, [2]Department of Mechanical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China, [3]Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
  • 相关基金：Supported by the Major Project of National Natural Science Foundation of China （No. 10632070） and the Postdoctoral Science Foundation （No.2004036239）.
作者： 曾卓雄, 周力行, 祁海鹰
关键词： 大涡流模拟, RANS模型, 粒子伴流效应, 气体-粒子流, 湍流调制, large eddy simulation, gas-particle flow, turbulence modulation
中文摘要：

由粒子的骚乱改进醒来效果被传递一个单一粒子的狂暴的煤气的流动的大旋涡模拟(LES ) 学习。预言平均时间并且在粒子后面的 root-mean-square 变化速度与为结果和试验性的结果建模的平均 Reynolds 的海军司烧一致。一个半实验的骚乱改进模型被现在的作者基于 LES 结果建议。这个模型被合并到秒顺序时刻为模仿垂直煤气粒子的管子流动和水平煤气粒子的隧道的二阶段的骚乱模型流动。模拟结果不与模型相比显示出那为粒子的财务弄醒效果，现在的模型在对试验性的结果的好一些的同意为煤气的骚乱调整给模拟结果

英文摘要：

The turbulence enhancement by particle wake effect is studied by large eddy simulation （LES） of turbulent gas flows passing a single particle. The predicted time-averaged and root-mean-square fluctuation velocities behind the particle are in agreement with the Reynolds-averaged Navier-Stokes modeling results and experimental results. A semi-empirical turbulence enhancement model is proposed by the present-authors based on the LES resuits. This model is incorporated into the second-order moment two-phase turbulence model for simulating vertical gas-particle pipe flows and horizontal gas-particle channel flows. The simulation results show that compared with the model not accounting for the particle wake effect, the present model gives simulation results for the gas turbulence modulation in much better agreement with the experimental results.

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期刊信息
  • 《中国化学工程学报：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中国化学工业与化学工程学会
  • 主编：
  • 地址：北京东城区青年湖路13号
  • 邮编：100011
  • 邮箱：cjche@cip.com.cn
  • 电话：010-64519487/88
  • 国际标准刊号：ISSN：1004-9541
  • 国内统一刊号：ISSN：11-3270/TQ
  • 邮发代号:
  • 获奖情况:
  • 1998年化工系统优秀信息成果一等奖,中国期刊方阵“双效”期刊
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  • 被引量:385