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In this paper, Poly flow software is used to calculate the isothermal flow of three model fluids in contraction channel. The streamline contours, the speed contours and the pressure contours are drawn. Great efforts were put into further study of flow properties. As Weissenberg number (We)increasing, the vortex exists in the corner of contraction becomes bigger, the velocity contour is closer to the...
In this article, a finite volume method for the numerical solution of viscoelastic flows is presented. The flow of Phan-Thien-Tanner (PTT) model fluid through a contraction channel has been chosen as a prototype example. The conservation and constitutive equations are solved using the finite volume method (FVM) in a staggered grid with an upwind scheme for the viscoelastic stresses and a hybrid scheme...
In this article, a finite volume method for the numerical solution of viscoelastic flows is presented. The flow of Phan-Thien-Tanner(PTT) model fluid through an abrupt expansion has been chosen as a prototype example. The conservation and constitutive equations are solved using the finite volume method (FVM) in a staggered grid with an upwind scheme for the viscoelastic stresses and a hybrid scheme...
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