FLUID & PARTICLE MECHANICS (Chemical Engineering) Problem!

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2.4 Particle size analysis for a sample of solid material (SG = 2.0) has produced the following data: Average Diameter (mm) 5.5 9.0 14.9 24.6 67.0 Mass (g) 16.0 13.0 25.0 30.0 16.0 The particles are non-spherical with sphericity of 0.81, independent of particle size. Calculate their settling velocities in a liquid of density 1200 kg/m2 and viscosity 5.0 mPa.s, for the following initial total solids concentrations: a. 1.0 vol% (v/v) 10.0 wt% (w/w) 30.0 wt% (w/w) Approx. Ans.(a) 0.18 m/s (b) 0.15 m/s (c) 0.10 m/s b. C