A STUDY OF PARTICLE REENTRAINMENT IN A TURBULENT FLOW

A Preston tube was used to determine the fluid forces on glass beads of 8, 20 and 35 mu diameter adhering to a surface. The results indicate that the distribution of adhesion force for the same particle size follows a log normal distribution. The median adhesion force for glass beads of 8 mu was 2.3x10^-9 Newton, for 20 mu was 3x10^-9 Newton, and for 35 mu was 5x10^-9 Newton.