Question

What is the ratio of inertial force to gravitational force known as?

(a) Weber number

(b) Froude number

(c) Reynold’s number

(d) Euler Number

The question was asked by my college professor while I was bunking the class.

My doubt is from Unit Systems in portion Introduction & Unit Systems of Food Processing Unit Operations

Answer 1

Correct option is (b) Froude number

The explanation is: Fr or Froude number is the ratio of inertial force to gravitational force. Its formula is Fr =\(\frac{V}{\sqrt{g.L}}\) . On the other hand, Weber number is the ratio of inertial force to surface tension and Reynold’s number is the ratio of inertial force to viscous force.