For an ideal fluid flow, Reynolds number is___________________?
Correct answer: D. ∞
- A. 2100
- B. 100
- C. 0
- D. ∞
Explanation
For an ideal fluid, viscosity is zero, so the Reynolds number, Re = ρvD/μ, tends to infinity. A Reynolds number of zero would represent no flow or a limiting condition, not ideal flow.
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