A non-dimensional number generally associated with natural convection heat transfer is____________?
Correct answer: B. Grashoff number
- A. Prandtl number
- B. Grashoff number
- C. Pecelet number
- D. Nusselt number
Explanation
The Grashof number compares buoyancy forces with viscous forces and is the key dimensionless number for natural convection. The Nusselt and Prandtl numbers are also used in convection correlations, but Grashof identifies the natural-convection driving effect.
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