CIVIL ENGINEERING

DESIGN,CONSTRUCTION AND MAINTENANCE OF THE NATURAL ENVIRONMENT.

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Saturday 6 April 2013

Weber Number

It is the ratio of inertial forces acting on the fluid to the surface tension acting forces. ‘D’ is characteristic length, fluid density,  fluid velocity and  is surface tension acting on the fluid.

Reynolds Number

Reynolds number is ratio of the inertial forces in a flowing fluid to the viscous forces acting on the fluid.

Mach Number

Mach number for a moving object is the ratio of speed of that object moving in a fluid (u) to the speed of sound in the fluid (a).
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