Motion of a coarse particle admixture in a horizontal plane channel

For two-phase turbulent flow in a plane horizontal channel, the behavior of an inertial solid admixture moving with velocity slip is investigated. It is shown that this motion takes place when the particles interact intensively with the channel walls, and have a considerable transverse velocity, and when the Stokes number exceeds a certain threshold value. The mathematical description of the particle motion with significant velocity slip is based on the consideration of two particle streams moving counter to each other from opposite channel walls (transversal motion). Integration of the particle mass, momentum, and angular momentum transport equations shows that the Magnus force is important for maintaining intense transversal motion of the particles. The results of calculating the motion of the particles are compared with the experimental data for various channel dimensions and carrier-phase velocities. © 1997 Plenum Publishing Corporation.