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Turbulence originating from the compromise-in-competition between viscosity and inertia
Wang, Limin1; Qiu, Xiaoping1,2; Zhang, Lin1; Li, Jinghai1
2016-09-15
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号300期号:SEP页码:83-97
摘要Fluid flows in chemical engineering are mainly characterized by the coexistence of turbulent and non turbulent fluids. Nonetheless, in traditional turbulence models, the laminar portion of the fluid flow is often neglected and constitutive laws are expressed to describe fully turbulent states within computational grids. We perceived this situation is a source of inaccuracies in modeling practical engineering flows. In this work, a stability criterion for turbulent flows, originating from the principle of compromise-in-competition between viscosity and inertia, is used to obtain closure in the turbulence model, which defines the energy-minimization multi-scale (EMMS)-based turbulence model. Analogous to two-phase flow, the model regards single-phase complex flows as a mixture of turbulent and non-turbulent fluids, and the effect of meso-scale eddy structure on the effective coefficient of viscosity is also considered. The EMMS-based turbulence model is tested against three benchmark problems, namely, the lid-driven cavity problem, flow through a conical diffuser, and flow over an airfoil using experimental and direct numerical simulation (DNS) data. Numerical results show that the EMMS-based turbulence model improves the accuracy of turbulence modeling, demonstrating its feasibility and practicality for accurate simulations of engineering complex flows. (C) 2016 Elsevier B.V. All rights reserved.
关键词Turbulent Flows Stability Criterion Principle Of Compromise-in-competition Emms-based Turbulence Model Meso-scale Multi-scale
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2016.04.115
收录类别SCI
语种英语
关键词[WOS]LARGE-EDDY-SIMULATION ; SOLID 2-PHASE FLOW ; BUBBLE-COLUMNS ; 2-FLUID MODEL ; STABILITY CONDITION ; REGIME TRANSITION ; CFD-SIMULATION ; EMMS MODEL ; NATURAL-CONVECTION ; 2-EQUATION MODEL
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
项目资助者National Natural Science Foundation of China(91434113 ; National Key Basic Research Program of China(2015CB251402) ; Chinese Academy of Sciences(CXJJ-14-Z72 ; 21106155) ; XDA07080303)
WOS记录号WOS:000378181400010
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21161
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, Limin,Qiu, Xiaoping,Zhang, Lin,et al. Turbulence originating from the compromise-in-competition between viscosity and inertia[J]. CHEMICAL ENGINEERING JOURNAL,2016,300(SEP):83-97.
APA Wang, Limin,Qiu, Xiaoping,Zhang, Lin,&Li, Jinghai.(2016).Turbulence originating from the compromise-in-competition between viscosity and inertia.CHEMICAL ENGINEERING JOURNAL,300(SEP),83-97.
MLA Wang, Limin,et al."Turbulence originating from the compromise-in-competition between viscosity and inertia".CHEMICAL ENGINEERING JOURNAL 300.SEP(2016):83-97.
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