Thermimage (version 2.1)

Prandtl: Returns the Prandtl number

Description

Returns the Prandtl number

Usage

Prandtl(Ta = 20)

Arguments

Ta

Air temperature in degrees Celsius. Default value is 20.

Details

Returns the Prandlt number

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 (Ta = 20) 
{
    Temp <- c(-50, -25, 0, 20, 40, 60, 80, 90, 100)
    Pr <- c(0.725, 0.72, 0.715, 0.713, 0.711, 0.709, 0.707, 0.7055, 
        0.703)
    lm <- lm(Pr ~ poly(Temp, 6))
    Prandtl <- predict(lm, newdata = data.frame(Temp = Ta), interval = "none")
    names(Prandtl) <- NULL
    Prandtl
  }

# Example:
Ta<-30
Prandtl(Ta)