A NEW METHOD FOR FIBER ORIENTATION DISTRIBUTION IN A PLANAR CONTRACTING TURBULENT FLOW

被引：2
|
作者：
Yang, Wei [1 ,2 ]
机构：
[1] Zhejiang Univ, Coll Aeronaut & Astronaut, Hangzhou 310003, Zhejiang, Peoples R China
[2] Ningbo Univ Technol, Coll Mech Engn, Ningbo, Zhejiang, Peoples R China
来源：
THERMAL SCIENCE | 2012年 / 16卷 / 05期
关键词：
rotational diffusion; fiber orientation; planar contraction; dilute turbulence; CHANNEL FLOW; PIPE FLOWS; SUSPENSIONS; MOTION; SIMULATION; PARTICLES;
D O I：
10.2298/TSCI1205367Y
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A new Euler model is proposed to predict fiber orientation distribution at high Reynolds number in a dilute planar contraction. The model mainly accounts for the evolution of mean velocity and turbulence-induced rotational diffusion coefficient along the contraction. It is shown that the new model, as the function of local turbulent dissipation rate, fiber length, and fluid viscosity, can reflect the subtle change of fiber orientation accurately.
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页码：1367 / 1371
页数：5
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