Lagrangian numerical simulation of particles in a submerged axisymmetric impinging jet flow

摘要

The Lagrangian behavior of solid particles released in a submerged and steady axisymmetric water jet impinging onto a plane surface was studied numerically. The primary flow, i.e., an impinging water jet flow (Re=13,000), is represented using a modified k-ε turbulence model proposed by Kato and Laundert. Trajectories and velocities of the particles are calculated, using a one-way coupling Lagrangian eddy-particle interaction model based on Schuen et al. Thousands of glass particles (density, 2600kg/m{sup}3) of 1.0 mm diameter are released in the impinging jet flow. The mean and root mean square velocities of particles are obtained and compared with measured data obtained in separate experiments, showing relatively good agreement.