engineering recuitment BEL Probationary Engineers Mock Test 2025 Heat Transfer Convection Boundary Layer Theory
The Prandtl number (Pr) is crucial in understanding the relative growth of the hydrodynamic and thermal boundary layers. When Pr> 1, which of the following statements is true?
1
The thermal boundary layer grows faster than the hydrodynamic boundary layer.
2
The growth rates of the boundary layers are unrelated.
3
Both boundary layers grow at the same rate.
4
The hydrodynamic boundary layer grows faster than the thermal boundary layer.