Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?
Correct answer: B. Blake-Plummer equation
- A. Fanning equation
- B. Blake-Plummer equation
- C. Hagen-Poiseuille equation
- D. Kozeny-Carman equation
Explanation
At very large packed-bed Reynolds numbers, inertial losses dominate viscous losses, so the pressure drop varies approximately with the square of velocity. The Blake-Plummer equation represents this high-Reynolds-number region, whereas Kozeny-Carman applies mainly to low Reynolds numbers.
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