Reynolds {Thermimage}

Calculates the Reynolds number.

Description

Calculates the Reynolds number, a unitless measure.

Usage

Reynolds(V, L, v)

Arguments

V

Air velocity in m/s

L

The characteristic dimension, usually the vertical dimension. For reference, a cylinder's characteristic L would be its height, assuming it is standing on its end This L should be the same L as is used for the convective coefficient calculation

v

The kinematic viscosity returned from function airviscosity (Ta).

Author(s)

Glenn J Tattersall

References

Blaxter, K. 1989. Energy Metabolism in Animals and Man Gates, D. M. 2003. Biophysical Ecology. Dover Publications, Mineola, New York. 611 pp.

Examples

## The function is currently defined as
function (V, L, v) 
{
  v<-airviscosity(Ta)
  Re<-V*L/v
  }

# Typical values for Reynolds numbers range from 6.6 to 6.6e+5 

# Example calculation:
V<-1
L<-1
Ta<-20
v<-airviscosity(Ta)
Reynolds(V, L, v)