Popis: |
The aim of this work is to study the wall effect on drag coefficient to reduce the net drag hydrodynamic force of effect finite boundaries on particle settling velocity. Experiments were conducted using plastic transparent cylinders of (40, 60, 80,100) mm outer diameter and 1520 mm length as a column for fluid container. Two types of fluids, suspension of carboxy methyl cellulose CMC (3 g of CMC in liter of water) were used as non-Newtonian fluid, water represents as Newtonian fluid. Stainless steel different shapes particles , Spheres with diameter of (11,12.5,14.5,22.5,24.5,28.5)mm cylinders with length of (8.9,13.7,19.4,18.1,24.7,38.9) mm and diameters of (10,10,10,20,20,20)mm, cube with side of(8.9,10.25,11.5,17.8,19.8,23)mm, and cone with height of(27,26.3,25.9,30,35,40) mm and diameter of (10,12.5,15,26,29.1,34.2) mm were used in the experiments. Equivalent diameter was used to evaluate the diameter for non-spherical particles. The range for diameter particle to diameter container (β) (0.118 |