3. The Weber Number (Nwe) is a dimensionless number defined as the ratio of inertia to surface tension forces and expressed mathematically as pv² L σ Nwe where = density, v= velocity, L length and σ = surface tension . Surface tension is defined as the work done per unit area of a fluid. Using FLT, show that Weber number is dimensionless.

3. The Weber Number (Nwe) is a dimensionless number defined as the ratio of inertia to surface tension forces and expressed mathematically as pv² L σ Nwe where = density, v= velocity, L length and σ = surface tension . Surface tension is defined as the work done per unit area of a fluid. Using FLT, show that Weber number is dimensionless.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.13P: 5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its...

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5.13 The torque due to the frictional resistance of the oil film between a rotating shaft and its bearing is found to be dependent on the force F normal to the shaft, the speed of rotation N of the shaft, the dynamic viscosity of the oil, and the shaft diameter D. Establish a correlation among these variables by using dimensional analysis.
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