Question

The square root of ratio of inertia force of a flowing fluid to the surface tension force is

• A. Froude's number
• B. Euler's number
• C. Weber's number
• D. Mach's number

Answer 1

Answer:

C. Weber's number

Reynol's number	$R_e=\frac {inertiaforce}{viscous force}=\frac{\rho VL}{\mu}$
Frounde Number	$F_r=\sqrt{\frac{inertia force}{gravitational force}}=\frac{V}{\sqrt{Lg}}$
Euler number	$E_u=\sqrt{\frac{inertia force}{Pressure force}}=\frac{V}{\sqrt{\frac{P}{\rho}}}$
Mach Number	$M=\sqrt{\frac{inertia force}{Elastic force}}=\frac{V}{\sqrt{\frac {K}{\rho}}}=\frac VC$