NEW APROXIMATE EQUATIONS TO ESTIMATE THE DRAG COEFFICIENT OF DIFFERENT PARTICLES OF REGULAR SHAPE

Abstract

Approximate equations for drag coefficients of different particle shapes are proposed in the form of Kaskas equation [1]. The constants of these equations have been determined by the least square method from experimental values [2, 3]. The constants of these equations are summarized in Table 1. These equations proved to be valid even at Reynolds numbers between 0,006 and 20000, the maximum relative error being 12 %.