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|Title:||Effect of constitutive models on the numerical simulation of viscoelastic flow at an entry region|
|Citation:||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|
|Appears in Collections:||Staff Publications|
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