# Reynolds Number Calculator

I want to calculate
Reynolds Number
Diameter or length
Density of the fluid
Velocity of the object
Viscosity of the fluid
Reynolds Number
Diameter or Length
Density of the fluid
Velocity of the object
Velocity of the object

## Reynolds number

The Reynolds number is a dimensionless quantity used to determine the ratio of inertial forces to viscous forces in a fluid flow.

## Reynolds number equation & formula

The Reynolds number equation is Re = ρvL/μ, where ρ is the density of the fluid, v is the velocity of the fluid, L is a characteristic length, and μ is the dynamic viscosity of the fluid.

## Reynolds number units

The Reynolds number has no units, as it is a dimensionless quantity.

## Turbulent flow Reynolds number

Turbulent flow occurs when the Reynolds number is greater than 4000.

## Laminar flow Reynolds number

Laminar flow occurs when the Reynolds number is less than 2000.

## Reynolds number laminar vs turbulent

Laminar flow occurs when the Reynolds number is less than 2000, while turbulent flow occurs when the Reynolds number is greater than 4000.

## Critical Reynolds number

The critical Reynolds number is the value at which laminar flow transitions to turbulent flow. This value is typically around 2000-4000.

## Reynolds number in water

The Reynolds number in water depends on the density, velocity, and viscosity of the water.

## Reynolds number pipe

The Reynolds number in a pipe depends on the density, velocity, and viscosity of the fluid flowing through the pipe, as well as the diameter of the pipe.

## Reynolds number of air

The Reynolds number of air depends on the density, velocity, and viscosity of the air.

## Reynolds number for flat plate

The Reynolds number for a flat plate depends on the density, velocity, and viscosity of the fluid flowing over the plate, as well as the length of the plate.

## Reynolds number kinematic viscosity

The Reynolds number is proportional to the kinematic viscosity of the fluid.

## High Reynolds number

A high Reynolds number indicates that the inertial forces in the fluid are greater than the viscous forces, and that the flow is likely to be turbulent.