Creeping flow around a sphere is defined, when particle Reynolds number is___________________?
Correct answer: B. < 0.1
- A. < 2100
- B. < 0.1
- C. > 2.5
- D. < 500
Explanation
Creeping flow requires viscous forces to dominate strongly over inertia; for a sphere this is commonly represented by a particle Reynolds number below about 0.1. Larger Reynolds numbers require corrections to the Stokes-flow assumption.
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