Numerical prediction of non-isothermal flow of nylon-6 past a cylinder between plates

G. H. Wu, S. J. Ju, C. C. Wu

研究成果: Article同行評審


Numerical simulations were undertaken for the non-isothermal creeping flow of a nylon-6 melt past a circular cylinder between plates. The fluid model used for this flow simulation is a non-isothermal White-Metzner constitutive equation, which describes the non-Newtonian behavior of nylon-6. The results were computed by an elastic-viscous split stress finite element method (EVSS-FEM), a mixed finite element method, incorporating the streamline upwind Petrov-Galerkin (SUPG) scheme. To verify the numerical algorithm, it was first applied to compute the corresponding isothermal flow of a shear-thinning solution of 5 wt% polyisobutylene in tetradecane (PIB/C14), modeled by the Phan-Thien Tanner model. The resulting velocity and stress fields were compared with known experimental data. Subsequently, both the isothermal and non-isothermal drag forces on the cylinder and the local heat transfer coefficients along the cylinder wall and channel wall were predicted. The effects of fluid elasticity, shearthinning, temperature-thinning, and heat transfer were investigated.

頁(從 - 到)27-38
期刊Journal of Polymer Engineering
出版狀態Published - 1999 1月

All Science Journal Classification (ASJC) codes

  • 化學工程 (全部)
  • 聚合物和塑料
  • 材料化學


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