Which of the following non-dimensional numbers is used for transition – McqOptions

MCQOPTIONS

1.	Which of the following non-dimensional numbers is used for transition from laminar flow to turbulent flow in the free convection?
A.	Reynolds number
B.	Grashoff number
C.	Peclet number
D.	Rayleigh number
Answer» C. Peclet number

Discussion

No Comment Found

Related MCQs

If qw =2500x where x is in m and in the direction of flow (x=0 at the inlet), the bulk mean temperature of the water leaving the pipe in C is ________
Water (Prandtl number 6) flows over a flat plate which is heated over the entire length. Which one of the following relationship between the hydrodynamic boundary layer thickness ( ) and the thermal boundary layer thickness ( )t is true?
For a fluid with Prandtl number Pr>1, momentum boundary layer thickness?
In laminar developing flow through a pipe with constant wall temperature, the magnitude of the pipe wall inner surface convective heat transfer coefficient shall be maximum at the:
The characteristic length for computing Grashoff number of horizontal cylinder is ___________
The laminar boundary layer occurs when a cold fluid over a hot plate. In which of the following positions, the temperature gradient assumes zero value?
Which non-dimensional numbers relates the thermal boundary layer and hydrodynamic boundary layer?
Which of the following non-dimensional numbers is used for transition from laminar flow to turbulent flow in the free convection?
Nusselt number for fully developed turbulent flow in a pipe is given by Nu=C Rea Prb. the values of a and b are?
Hot air at 50 C. If the forced heat transfer convection is 75 W/m2K, the heat gain rate gain rate by the plate through an area of 2m2 will be _____