On the Collision Between Small Particles and a Plane Wall in a Jet

Abstract

When a jet stream containing small particles impinges on a plane wall, the possibility exists that these particles will collide with the wall. By assuming that the flow is incompressible and irrotational, that particle motion is governed by Stokes' drag law, and that the interaction between particles can be neglected, the following characteristics can be theoretically determined by using the Stokes number and the inclined angle of the jet as parameters : The classification into various types of the collision between the particles and the wall, the critical conditions at which the particles first collide with the wall, the region in which the collision occurs, the distribution of the collision frequency along the wall, the ratio of the colliding particles to the total number of particles, the points at which the collision frequency peaks and so on.