Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/58169
Title: Effect of constitutive models on the numerical simulation of viscoelastic flow at an entry region
Authors: Loh, K.W.L.
Tay, A.A.O. 
Teoh, S.H. 
Issue Date: Aug-1996
Source: Loh, K.W.L.,Tay, A.A.O.,Teoh, S.H. (1996-08). Effect of constitutive models on the numerical simulation of viscoelastic flow at an entry region. Polymer Engineering and Science 36 (15) : 1990-2000. ScholarBank@NUS Repository.
Abstract: The poor solutions of numerical simulations at a contraction has often been attributed to the numerical scheme used. However, the solution of a numerical simulation is also highly dependent on the constitutive equation. A study of various constitutive equations on the simulation of the 4:1 contraction flow is made in this paper, and their effects on the results analyzed. The constitutive models considered include the Upper Convected Maxwell model, the Oldroyd-B model, the White-Metzner model, the Phan-Thien-Tanner model and the Giesekus-Leonov model. It was found that although the Phan-Thien-Tanner model gave the best results, the solution at higher shear rates were still not satisfactory.
Source Title: Polymer Engineering and Science
URI: http://scholarbank.nus.edu.sg/handle/10635/58169
ISSN: 00323888
Appears in Collections:Staff Publications

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