In case the hydrodynamic and thermal boundary layers are identical for a fluid flowing over a heated plate
A)The value of Prandtl number must be 0.5
B)The plate surface must be smooth
C)The plate must be of low thermal conductivity
D)The value of Prandtl number thust be 1
E)The value of Prandtl number must be zero

Question

Quizplus · Accepted Answer

The Prandtl number (Pr) is a dimensionless number defined as the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity. When Pr = 1, it indicates that the rates of momentum and heat transfer are the same, leading to identical hydrodynamic and thermal boundary layers.

In Case the Hydrodynamic and Thermal Boundary Layers Are Identical