dpdDTD | R Documentation |

The function `dpdDTD(Temp,D,digits=9)`

returns the pressure derivative with
respect to Density, dpdD, for given T [K] and D [kg m-3].

dpdDTD(Temp, D, digits = 9)

`Temp` |
Temperature [ K ] |

`D` |
Density [ kg m-3 ] |

`digits` |
Digits of results (optional) |

This function calls a Fortran DLL that solves the Helmholtz Energy Equation. in accordance with the Revised Release on the IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use (June 2014) developed by the International Association for the Properties of Water and Steam, http://www.iapws.org/relguide/IAPWS-95.html. It is valid from the triple point to the pressure of 1000 MPa and temperature of 1273.

The pressure derivative with respect to D: dp/dD [ MPa kg-1 m3 ] and an Error Message (if an error occur: errorCodes)

Temp <- 500. D <- 838.025 dpdD <- dpdDTD(Temp,D) dpdD

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.