Drag On Non-Spherical Particles In Non-Newtonian Fluids

Abstract

The drag coefficient (CD ) was determined for three different non-spherical particles (cubes, rectangles and cylinders) of different sizes falling in two different non-Newtonian fluids (glycerol and polymer - paraffin oil mixture) using the terminal velocity technique. The variation of the drag coefficient with the variation of non-spherical particle size was explained. Also the relation between CD and Reo (0.25-5) is graphically compared with those previously published in the literature for discs and cylinders with infinite length. Moreover some mathematical relations, previously published in the literature, are verified for the three tested non-spherical particles.