Modelica.Media.Interfaces.PartialMixtureMedium.ThermodynamicState Modelica.Media.Interfaces.PartialMixtureMedium.ThermodynamicState

thermodynamic state variables

Information

Extends from (Minimal variable set that is available as input argument to every medium function).

Modelica definition

redeclare replaceable record extends ThermodynamicState 
  "thermodynamic state variables"
  AbsolutePressure p "Absolute pressure of medium";
  Temperature T "Temperature of medium";
  MassFraction X[nX] "Mass fractions (= (component mass)/total mass  m_i/m)";
end ThermodynamicState;

Modelica.Media.Interfaces.PartialMixtureMedium.FluidConstants Modelica.Media.Interfaces.PartialMixtureMedium.FluidConstants

extended fluid constants

Information

Extends from (critical, triple, molecular and other standard data of fluid).

Modelica definition

redeclare replaceable record extends FluidConstants 
  "extended fluid constants"
  Temperature criticalTemperature "critical temperature";
  AbsolutePressure criticalPressure "critical pressure";
  MolarVolume criticalMolarVolume "critical molar Volume";
  Real acentricFactor "Pitzer acentric factor";
  Temperature triplePointTemperature "triple point temperature";
  AbsolutePressure triplePointPressure "triple point pressure";
  Temperature meltingPoint "melting point at 101325 Pa";
  Temperature normalBoilingPoint "normal boiling point (at 101325 Pa)";
  DipoleMoment dipoleMoment 
    "dipole moment of molecule in Debye (1 debye = 3.33564e10-30 C.m)";
  Boolean hasIdealGasHeatCapacity=false 
    "true if ideal gas heat capacity is available";
  Boolean hasCriticalData=false "true if critical data are known";
  Boolean hasDipoleMoment=false "true if a dipole moment known";
  Boolean hasFundamentalEquation=false "true if a fundamental equation";
  Boolean hasLiquidHeatCapacity=false 
    "true if liquid heat capacity is available";
  Boolean hasSolidHeatCapacity=false "true if solid heat capacity is available";
  Boolean hasAccurateViscosityData=false 
    "true if accurate data for a viscosity function is available";
  Boolean hasAccurateConductivityData=false 
    "true if accurate data for thermal conductivity is available";
  Boolean hasVapourPressureCurve=false 
    "true if vapour pressure data, e.g., Antoine coefficents are known";
  Boolean hasAcentricFactor=false "true if Pitzer accentric factor is known";
  SpecificEnthalpy HCRIT0=0.0 
    "Critical specific enthalpy of the fundamental equation";
  SpecificEntropy SCRIT0=0.0 
    "Critical specific entropy of the fundamental equation";
  SpecificEnthalpy deltah=0.0 
    "Difference between specific enthalpy model (h_m) and f.eq. (h_f) (h_m - h_f)";
  SpecificEntropy deltas=0.0 
    "Difference between specific enthalpy model (s_m) and f.eq. (s_f) (s_m - s_f)";
end FluidConstants;

Modelica.Media.Interfaces.PartialMixtureMedium.moleToMassFractions Modelica.Media.Interfaces.PartialMixtureMedium.moleToMassFractions

Return mass fractions X from mole fractions

Information

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

TypeNameDefaultDescription
MoleFractionmoleFractions[:] Mole fractions of mixture [1]
MolarMassMMX[:] molar masses of components [kg/mol]

Outputs

TypeNameDescription
MassFractionX[size(moleFractions, 1)]Mass fractions of gas mixture [1]

Modelica definition

function moleToMassFractions 
  "Return mass fractions X from mole fractions"
  extends Modelica.Icons.Function;
  input SI.MoleFraction moleFractions[:] "Mole fractions of mixture";
  input MolarMass[:] MMX "molar masses of components";
  output SI.MassFraction X[size(moleFractions, 1)] 
    "Mass fractions of gas mixture";
protected 
  MolarMass Mmix =  moleFractions*MMX "molar mass of mixture";
algorithm 
  for i in 1:size(moleFractions, 1) loop
    X[i] := moleFractions[i]*MMX[i] /Mmix;
  end for;
end moleToMassFractions;

Modelica.Media.Interfaces.PartialMixtureMedium.massToMoleFractions Modelica.Media.Interfaces.PartialMixtureMedium.massToMoleFractions

Return mole fractions from mass fractions X

Information

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

TypeNameDefaultDescription
MassFractionX[:] Mass fractions of mixture [1]
MolarMassMMX[:] molar masses of components [kg/mol]

Outputs

TypeNameDescription
MoleFractionmoleFractions[size(X, 1)]Mole fractions of gas mixture [1]

Modelica definition

function massToMoleFractions 
  "Return mole fractions from mass fractions X"
  extends Modelica.Icons.Function;
  input SI.MassFraction X[:] "Mass fractions of mixture";
  input SI.MolarMass[:] MMX "molar masses of components";
  output SI.MoleFraction moleFractions[size(X, 1)] 
    "Mole fractions of gas mixture";
protected 
  Real invMMX[size(X, 1)] "inverses of molar weights";
  SI.MolarMass Mmix "molar mass of mixture";
algorithm 
  for i in 1:size(X, 1) loop
    invMMX[i] := 1/MMX[i];
  end for;
  Mmix := 1/(X*invMMX);
  for i in 1:size(X, 1) loop
    moleFractions[i] := Mmix*X[i]/MMX[i];
  end for;
end massToMoleFractions;

Automatically generated Fri Nov 4 08:36:43 2011.