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The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is
- AEqual to one
- BGreater than one
- CLess than one
- DEqual to Nusselt number
Correct answer: A
Discussion 1
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CCommunity
Equal to one
If the Prandtl number (Pr) is 1, the two boundary layers (hydrodynamic and thermal) are the same thickness.
If the Pr > 1, the thermal boundary layer is thinner than the velocity boundary layer.
If the Prandtl number (Pr) is 1, the two boundary layers (hydrodynamic and thermal) are the same thickness.
If the Pr > 1, the thermal boundary layer is thinner than the velocity boundary layer.