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.

Good and useful it

ReplyDeleteeuler 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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