PrandtTD {IAPWS95}

Prandt Number, Function of Temperature and Density

Description

The function PrandtTD(Temp,D,digits=9) computes the Prandt Number, i.e., the product of the dynamic viscosity by the specific isobaric heat capacity, divided by the thermal conductivity of water for given T [K] and D [kg/m3].

Usage

PrandtTD(Temp, D, digits = 9)

Arguments

Temp

Temperature [ K ]

D

Density [ kg m-3 ]

digits

Digits of results (optional)

Details

This function calls a Fortran DLL that computes the Prandt Number, valid from the triple point to the pressure of 1000 MPa and temperature of 1173.15K.

Value

The Prandt Number: Pr [ - ]

Error message (if an error occur)

Examples

Temp <- 500.
D <- 838.025
Pran <- PrandtTD(Temp,D)
Pran