# Critical Velocity Calculator, Formula, Critical Velocity Calculation

## Critical Velocity Calculator:

Enter the values of Reynold’s number R , Co-efficient of Viscosity u(m2/s) , Inner Diametre of the pipe D(m) & Density of the liquid p(kg/m3)  to determine the value of Critical Velocity Vc(m/s).

 Enter Reynold’s number: Enter Co-Efficient of Viscosity: m2/s Enter Inner Diametre of the Pipe: m Enter Density of the Liquid: kg/m3 Result – Critical Velocity: m/s

## Critical Velocity Formula:

The Critical Velocity Vc(m/s) in meter per second is equal to the Reynold’s number R into multiply the Co-efficient of Viscosity u(m2/s) in meter square per second and divided by the Inner Diametre of the pipe D(m) in meter into multiply the Density of the liquid p(kg/m3) in kilogram per meter cube.

The Formula of Critical Velocity can be writtern as,

Vc(m/s) = ( R * u(m2/s) ) / ( D(m) * p(kg/m3) )

Here,

Vc(m/s) = Critical Velocity in meter per second

R =  Reynold’s number

u(m2/s) = Co-efficient of Viscosity in meter square per second

Learn More:   eV to Velocity Calculator, Formula, eV to Velocity Calculation

D(m) = Inner Diametre of the pipe in meter

p(kg/m3) = Density of the liquid in kilogram per meter cube

### Example Problems for Critical Velocity :

1)Calculate the Critical Velocity and given for Reynold’s number = 3.5 , Co-efficient of Viscosity = 25m3/s , Inner Diametre of the pipe = .30m , Density of the liquid = 1.300kg/m3.

Vc = ( R * u ) / ( D * p )

Vc = ( 3.5 * 25 ) / ( .30 * 1.300 )

Vc = 379.16m/s.

2)Calculate the Density of the liquid and given for Reynold’s number = 3.5 , Co-efficient of Viscosity = 25m3/s , Inner Diametre of the pipe = .30m , Critical Velocity = 379.16m/s.