| 用Lagrange方法分析颗粒在湍流场中的运动 |
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| 引用本文： | 刘小兵,曾庆川,程良骏. 用Lagrange方法分析颗粒在湍流场中的运动[J]. 华中科技大学学报(自然科学版), 1994, 0(10) |
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| 作者姓名： | 刘小兵 曾庆川 程良骏 |
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| 作者单位： | 华中理工大学电力工程系 |
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| 摘 要： | 用Ｌａｇｒａｎｇｅ方法推导了固体小颗粒在湍流场中的无因次运动方程，给出了该方程的一个线性微分方程形式。求解了颗粒在湍流场中的湍流运动特性，包括颗粒的能量频谱、颗粒速度方均值、Ｌａｇｒａｎｇｅ相关函数及颗粒的湍流扩散，同时给出了颗粒线性微分运动方程的通解。
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| 关 键 词： | Lagrange方法，颗粒，运动，湍流场 |
On The Motion of Particales in a Turbulent Flow Fleld by Lagrange''''s Method |
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| Liu Xiaobing Dept. of Elec.Power Engin,H,U,S.T.,Wuhan ,China.,Zeng Qingchuan, Cheng Liangjun. On The Motion of Particales in a Turbulent Flow Fleld by Lagrange''''s Method[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1994, 0(10) |
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| Authors: | Liu Xiaobing Dept. of Elec.Power Engin H U S.T. Wuhan China. Zeng Qingchuan Cheng Liangjun |
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| Affiliation: | Liu Xiaobing Dept. of Elec.Power Engin,H,U,S.T.,Wuhan 430074,China.,Zeng Qingchuan, Cheng Liangjun |
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| Abstract: | A dimensionless equation for partkicle motion in a turbulent flow field is derived by La-grange's method.It is given in the form of a linear differential equation. By a spectral analy-sis,Fourier transform,and ensemble average and time average of some parameters,the mo-tion characteristics of particles, including the particle energy spectrum,mean-square veloci-ty,and Lagrangian autocorrelation function as well as particle turbulent diffusivity are stud-ied.The general solution for the linear differential equation of motion is given. |
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| Keywords: | Lagrange's method turbulent flow particles motion |
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