Dimensionless Numbers

Dimensionless Numbers in Hydraulics and Fluid Mechanics - The important dimensionless numbers are Reynold's number, Froude's number, Weber's number, Euler's number and Mach's number:

(a) Reynold's number: It is the ratio of the inertia force to the viscous force.

(b) Froude's number: It is the ratio of the inertia force to the gravity force.

(c) Weber's number: It is the ratio of the inertia force to the surface tension force.

(d) Euler's number: It is the ratio of the inertia force to the pressure force.

(e) Mach's number or Cauchy's number: It is the ratio of the inertia force to the elastic force.

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3 comments:

  1. euler number is the ratio of pressure force to the inertia force but here the formula is reverse!! Which one is correct

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