DIRECTIONAL DIAGRAMS OF THE PARTICLE DRIFT IN A STANDING WAVE WITH ACCOUNT OF THE BASSET FORCE

A study is made of the threshold parametric values at which the direction of the particle drift in a standing wave is reversed, with account taken of the Basset force at different Reynolds and Strouhal numbers. The dependences of the threshold value squared of the entrainment coeffi cient on the relative density of the particle with account and without account of the Basset force are found. The infl uence of the Basset force on the threshold value of the density parameter is investigated. It is shown that account taken of the Basset force exerts a particularly strong infl uence on the threshold curves for nondense particles. The threshold values of density of the particle and of the coeffi cient of its entrainment decrease as the Strouhal number increases.
   
Author:  D. A. Gubaidullin, P. P. Osipov, and A. N. Zakirov
Keywords:  particle drift, forces in acoustic wave fields, Basset force
Page:  621