A fluidized bed has small particles with Reynolds number 18 and diameter 2 mm. The fluid medium is water. The density of the particle is 2500 kg/m3. Consider viscosity of water to be 8.11 × 10-4 kg/ms. Assume the particles to be completely spherical. Porosity of bed is 0.45. Assume acceleration due to gravity as 9.8 m/s2.

A fluidized bed has small particles with Reynolds number 18 and diame

1.	A fluidized bed has small particles with Reynolds number 18 and diameter 2 mm. The fluid medium is water. The density of the particle is 2500 kg/m3. Consider viscosity of water to be 8.11 × 10-4 kg/ms. Assume the particles to be completely spherical. Porosity of bed is 0.45. Assume acceleration due to gravity as 9.8 m/s2.
A.	0.07
B.	0.004
C.	0.08
D.	0.04
Answer» D. 0.04