Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/58023
Title: Computer simulation of viscoelastic flow at the entry region
Authors: Loh, K.W.L.
Teoh, S.H. 
Tay, A.A.O. 
Issue Date: 1996
Source: Loh, K.W.L.,Teoh, S.H.,Tay, A.A.O. (1996). Computer simulation of viscoelastic flow at the entry region. Polymer Engineering and Science 36 (3) : 368-377. ScholarBank@NUS Repository.
Abstract: Non-Newtonian flow has a nonlinear constitutive relationship with an advective nature. It was found that in highly advective (convective) problems, the Galerkin formulation "under-diffused," resulting in divergence at low elastic numbers. The use of the Streamline-Upwinding (SU) method improved the solution, especially when used with the Phan-Thien-Tanner (PTT) model. At the boundary discontinuity, however, the stress gradient did not necessarily flow along the streamline direction, and oscillations still remained at the corner. The Discontinuity-Capturing (DC) method resolved this problem by applying control in the direction of the stress gradient rather than the stream line direction, and a smoother solution at the corner region was achieved.
Source Title: Polymer Engineering and Science
URI: http://scholarbank.nus.edu.sg/handle/10635/58023
ISSN: 00323888
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

22
checked on Mar 9, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.