Question

Which among the following is the standard symbol for Peclet number?

(a) P

(b) p

(c) Pe

(d) pe

The question was asked in unit test.

This is a very interesting question from Dimensionless Numbers in section Dimensional and Model Analysis of Fluid Mechanics

Answer 1

Right answer is (c) Pe

Easy explanation: The standard symbol for Peclet’s number is Pe. Peclet’s number in fluid mechanics deals with heat transfer. It is defined as the ratio of transport rate over molecular diffusive transport.