Fanning friction factor equation applies to the _____________ fluid flow?
Correct answer: D. Neither A. nor B.
- A. Non-isothermal condition of
- B. Compressible
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
The usual Fanning friction-factor equation is formulated for steady, fully developed pipe flow with constant fluid properties. Non-isothermal or compressible flow requires accounting for changing temperature, density, or viscosity, so neither listed condition applies directly.
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