纤维悬浮剪切湍流中纤维旋转扩散系数的理论研究

高振宇; 林建忠; 李俊

纤维悬浮剪切湍流中纤维旋转扩散系数的理论研究

浙江大学力学系,流体传动及控制国家重点实验室,杭州 310027;

基金项目: 国家自然科学基金(重点)资助项目(10632070)

详细信息

作者简介:
高振宇(1979- ),男,沈阳人,博士;林建忠(1958- ),男,福建建阳人,教授,博士生导师(联系人.Tel:+86O571O86836009;E-mail:jzlin@sfp.zju.edu.cn).

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出版历程
- 收稿日期: 2005-03-29
- 修回日期: 2006-12-20
- 刊出日期: 2007-03-15

Theoretical Research on the Rotational Dispersion Coefficient of Fiber in the Turbulent Shear Flow of Fiber Suspension

Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, P. R. China;
China Metrology University, Hangzhou 310018, P. R. China

摘要

摘要: 对纤维悬浮剪切湍流中纤维旋转扩散系数进行了理论研究．首先建立了流场不同脉动速度梯度间的相关矩函数，然后推导出了纤维旋转扩散系数的表达式，该表达式依赖于特征长度、时间、速度和一个与壁面作用相关的无量纲参数．得到的纤维旋转扩散系数可以应用于非均匀和非各向同性的湍流场，此外还可以推广到三维湍流场，因而为纤维悬浮湍流场的研究提供了理论基础．
- 纤维悬浮流 /
- 剪切湍流 /
- 旋转扩散系数 /
- 表达式
Abstract: The rotational dispersion coefficient of the fiber in the turbulent shear flow of fiber suspension was studied theoretically.The function of correlation moment between the different fluctuating velocity gradient of the flow was built.Then the expression of rotational dispersion coefficient is derived.Which is dependent on the characteristic length,time,velocity and a dimensionless parameter related to the effect of wall.The derived expression of rotational dispersion coefficient can be employed to the inhomogeneous and non-isotropic turbulent flows.Furthermore it can be expanded to three-dimensional turbulent flows and serves as the theoretical basis for solving the turbulent flow of fiber suspension.
- fiber suspension /
- turbulent shear flow /
- rotational dispersion coefficient /
- expression

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参考文献(13)

[1]	Asgharian B,Yu C.Deposition of fibers in the rat lung[J].Journal of Aerosol Science,1989,30:355-366.
[2]	Kagermann H, Kohler W. On the motion of non-spherical particles in a turbulent flow[J].Physica A,1984,116:178-198.
[3]	Krushkal E,Gallily I. On the orientation distribution function of non-spherical aerosol particles in a general shear flow-ii. The turbulent case[J].Journal of Aerosol Science,1988,19:197-211. doi: 10.1016/0021-8502(88)90223-6
[4]	Bernstein O, Shapiro M. Direct determination of the orientation distribution function of cylindrical particles immersed in laminar and turbulent flow[J].Journal of Aerosol Science,1994,25(1):113-136.
[5]	林建忠，林江，石兴.两相流中柱状固粒对流体湍动特性影响的研究[J].应用数学和力学，2002,23(5):483-488.
[6]	LIN Jian-zhong,SHI Xing,YU Zhao-sheng.The motion of cylindrical particles in an evolving mixing layer[J].Int J of Multiphase Flow,2003,29(8):1355-1372. doi: 10.1016/S0301-9322(03)00086-7
[7]	LIN Jian-zhong,ZHANG Wei-feng,YU Zhao-sheng. Numerical research on the orientation distribution of fibers immersed in laminar and turbulent pipe flows[J].Journal of Aerosol Science,2004,35(1):63-82. doi: 10.1016/S0021-8502(03)00388-4
[8]	Olson J A, Richerd J K.The motion of fibres in turbulent flow[J].J Fluid Mech,1998,377:47-64. doi: 10.1017/S0022112098002973
[9]	Olson J A. The motion of fibres in turbulent flow, stochastic simulation of isotropic homogeneous turbulence[J].Int J Multiphase Flow,2001,27:2083-2103. doi: 10.1016/S0301-9322(01)00050-7
[10]	GAO Zhen-yu,LIN Jian-zhong.Research on the dispersion of cylindrical particles in turbulent flows [J].Journal of Hydrodynamics,2004,16(1):1-6.
[11]	Doi M, CHEN Dong.Simulation of aggregating colloids in shear flow[J].J Chem Phys,1989,90:5271-5279. doi: 10.1063/1.456430
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[13]	窦国仁. 紊动力学[M].北京:人民教育出版社,1981.

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纤维悬浮剪切湍流中纤维旋转扩散系数的理论研究

作者简介:
高振宇(1979- ),男,沈阳人,博士;林建忠(1958- ),男,福建建阳人,教授,博士生导师(联系人.Tel:+86O571O86836009;E-mail:jzlin@sfp.zju.edu.cn).

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Theoretical Research on the Rotational Dispersion Coefficient of Fiber in the Turbulent Shear Flow of Fiber Suspension

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留言板

纤维悬浮剪切湍流中纤维旋转扩散系数的理论研究

作者简介: 高振宇(1979- ),男,沈阳人,博士;林建忠(1958- ),男,福建建阳人,教授,博士生导师(联系人.Tel:+86O571O86836009;E-mail:jzlin@sfp.zju.edu.cn).

计量

出版历程

Theoretical Research on the Rotational Dispersion Coefficient of Fiber in the Turbulent Shear Flow of Fiber Suspension

计量

出版历程

目录

作者简介:
高振宇(1979- ),男,沈阳人,博士;林建忠(1958- ),男,福建建阳人,教授,博士生导师(联系人.Tel:+86O571O86836009;E-mail:jzlin@sfp.zju.edu.cn).