Dimensionless Numbers

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Last updated 12:47 AM on 4/8/26
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5 Terms

1
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Reynold’s Number

Intertia Force / Viscous Force

VL/v

Pipe loss in cities

2
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Froude’s Number

Inertia Force / Gravity Force

V/sqrt(gL)

Small models of ships

3
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Euler’s Number

Intertia Force / Pressure Force

V/sqrt(p/row)

Vacuums, pumps

4
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Weber’s Number

Inertia Force / Surface Tension Force

V/sqrt(sigma/rowL)

Nozzles

5
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Mach’s Number

Intertia Force / Elastic Force

M = V/C

Aircraft