A dimensionless number which is the ratio of mass heat flow rate to the heat flow rate by conduction under a unit temperature gradient and through a thickness L is known as
A)Nusselt number
B)Prandtl number
C)Weber number
D)Grashof number
E)Peclet number

Question

Quizplus · Accepted Answer

The Peclet number is a dimensionless number that represents the ratio of the rate of advection of a physical quantity by the flow to the rate of diffusion of the same quantity driven by an appropriate gradient. In the context of heat transfer, it compares the heat transported by the flow of a fluid to the heat conducted within the fluid.

A Dimensionless Number Which Is the Ratio of Mass Heat