Development of the modified k-ε turbulence model of power-law fluid for engineering applications

作     者：RO Kyoungchul RYOU HongSun 

作者机构：Department of Mechanical EngineeringChung-Ang University 

基　　金：supported by the Chung-Ang University Research Grant in 2008 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2012年第55卷第1期

页      码：276-284页

摘      要：In the present study, a high Reynolds number version of a turbulence model was proposed by using drag reduction to analyze the turbulent flows of power-law fluid for engineering applications. In order to determine the model constants in the constitutive equation, numerical simulation was conducted under the same conditions that were applied to obtain the experiment re- suits and previous turbulence models. For validation of the modified turbulence model, numerical simulations were performed for power-law fluids of different viscosities. The results of the modified k-ε turbulence model showed better agreement with the experimental results than those of the standard k-ε turbulence model. In addition, computation time and computer resource of the modified k-ε turbulence model were reduced by about one third as compared to the low Reynolds number model for power-law fluids.

主 题 词：power-law fluid turbulent flow drag reduction turbulence model computational fluid dynamics(CFD) 

学科分类：080704[080704] 080103[080103] 08[工学] 0807[工学-电子信息类] 0801[工学-力学类] 

核心收录：

D　O　I：10.1007/s11431-011-4664-x

馆 藏 号：203130311...