Question

Plot up the free-fall velocity for particles of specific gravity of 1, 2, and 3
assuming Stokes law behavior. Compare to water droplet velocities given here
as
diameter, M
velocity, ft/hr
50
900
100
3,100
500
24,000
1,000
46,000
Also compare to the results given in Fig. 10.1. Where does Stokes law begin
to fail?

Answer 1

Answer:

Determine the free-fall velocity and Reynolds number for a particles of specific gravity of 1, 2, and 3 and size 50, 100, 500, and 1,000 m diameter, assuming Stokes’ Law behavior. Compare to water droplet velocities given in Figure 3.7 of handout. What is the percent difference between the calculated values and the values from Figure 3.7 handout? Explain the difference. Where does Stokes’ law begin to fail?