Drag co-efficient CD, in Stoke's law range is given by________________?
Correct answer: B. CD = 24/Re.p
- A. CD = 16/Re.p
- B. CD = 24/Re.p
- C. CD = 18.4/Re.p
- D. CD = 0.079/Re
- E. 25.p
Explanation
In the Stokes-law range, a small spherical particle has drag coefficient C_D = 24/Re_p. The relation applies at very low particle Reynolds number, where viscous forces dominate inertial forces.
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