화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korea-Australia Rheology Journal, Vol.30, No.4, 249-260, November, 2018
DOI10.1007/s13367-018-0024-8  Export Citation
Numerical simulation of a viscoelastic RANS turbulence model in a diffuser
Saber Azad, Hamed Amiri Moghadam, Alireza Riasi†, and Hossien Mahmoodi Darian
  • School of Mechanical Engineering, University of Tehran, Tehran 11155-4563, Iran
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One of the newest viscoelastic RANS turbulence models for drag reducing flows with polymer additives is studied considering different rheological properties. A finitely extensible nonlinear elastic-Peterlin (FENE-P) constitutive model is used to describe the viscoelastic effect of the polymer solutions and the k - ε - v2 - f turbulence framework is applied for turbulence modelling. The geometry in this study is a twodimensional diffuser. The finite volume method (FVM) with a non-uniform collocated mesh is used to solve the momentum and constitutive equations. In order to evaluate the turbulence model, the flow is simulated with different parameters such as the Weissenberg number and the maximum polymer extensibility and compared with the experimental results qualitatively. The velocity profiles, pressure distribution, reattachment length, and the amount of the drag reduction predicted by the turbulence model are in line with the experimental results.
Keywords:FENE-P fluid;turbulent flow;viscoelastic RANS Model;two dimensional diffuser
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