Actas de congresos
A Numerical Study of the FENE-CR Model Applied to a Jet Flow Problem
11th International Conference Of Numerical Analysis And Applied Mathematics 2013, Pts 1 And 2 (icnaam 2013). Melville: Amer Inst Physics, v. 1558, p. 66-69, 2013.
Universidade Estadual Paulista (UNESP)
The FENE-CR model is investigated through a numerical algorithm to simulate the time-dependent moving free surface flow produced by a jet impinging on a flat surface. The objective is to demonstrate that by increasing the extensibility parameter L, the numerical solutions converge to the solutions obtained with the Oldroyd-B model. The governing equations are solved by an established free surface flow solver based on the finite difference and marker-and-cell methods. Numerical predictions of the extensional viscosity obtained with several values of the parameter L are presented. The results show that if the extensibility parameter L is sufficiently large then the extensional viscosities obtained with the FENE-CR model approximate the corresponding Oldroyd-B viscosity. Moreover, the flow from a jet impinging on a flat surface is simulated with various values of the extensibility parameter L and the fluid flow visualizations display convergence to the Oldroyd-B jet flow results.