Simulation of Particle Impact with a Wedge in Dilute Two-phase Flow

Defence Science Journal

Sanjeev Sanghi¹  Krishnan V. Pagalthivarthi¹  P.S. V.S. Sridhar² 

[1] Indian Institute of Technology Delhi;General Electric Company, Bangalore

关键词: Fluid flow;    solid-fluid flow;    coupling;    test rig;    impact;    one-way coupling;    impact-wear test rig;    two-phase flow;    Reynolds number;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

Dilute solid-fluid flow over a wedge in a stationary channel is numerically solved using one-way coupling between fluid and solid particles. The two-dimensional, steady, laminar carrierphase flow is determined by Galerkin finite-element method using Newton's iteration for primitive variables, pressure, and velocity. Velocity is interpolated biquadratically and pressure is interpolated linearly. Parameter continuation is used to compute solutions for relatively large values of flow Reynolds number. Individual particles are tracked from specified inlet positions by a fourth-order Runge-Kutta method applied to the equations of motion ofthe particle. Forces acting on the particle include drag, pressure, and inertia. Forces due to particle-particle interaction and Basset forces are neglected. Collisions with the wedge and the walls of the channel are modelled via assumed coefficients ofrestitution in both the normal and the tangential directions. The point of actual impact is determined by interpolation. Results are presented for various parameters, such as particle diameter, wedge angle, Reynolds number, particle density, etc.

【 授权许可】

Unknown