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Fluid Mechanics

Basic Properties

Dimensionless...

Question

Dimensionless Euler number is a function of inertia force and_____.

A

Surface tension force

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B

Viscous force

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C

Elastic force

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D

Pressure force

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Solution

The correct option is D Pressure force
Euler number,
$E_{u} = \sqrt{\frac{I n e r t i a f o r c e}{P r e s s u r e f o r c e}}$

$= \sqrt{\frac{p V^{2} L^{2}}{P L^{2}}} = \frac{V}{\sqrt{P / ρ}}$

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