.TRANSFORM.Media.Interfaces.Solids.PartialSimpleAlloy_TableBased

Information

This is the base package for medium models of incompressible fluids based on tables. The minimal data to provide for a useful medium description is tables of density and heat capacity as functions of temperature.

It should be noted that incompressible media only have 1 state per control volume (usually T), but have both T and p as inputs for fully correct properties. The error of using only T-dependent properties is small, therefore a Boolean flag enthalpyOfT exists. If it is true, the enumeration Choices.independentVariables is set to Choices.independentVariables.T otherwise it is set to Choices.independentVariables.pT.

Using the package TableBased

To implement a new medium model, create a package that extends TableBased and provides one or more of the constant tables:

tableDensity        = [T, d];
tableHeatCapacity   = [T, Cp];
tableConductivity   = [T, lam];
tableViscosity      = [T, eta];
tableVaporPressure  = [T, pVap];

The table data is used to fit constant polynomials of order npol, the temperature data points do not need to be same for different properties. Properties like enthalpy, inner energy and entropy are calculated consistently from integrals and derivatives of d(T) and Cp(T). The minimal data for a useful medium model is thus density and heat capacity. Transport properties and vapor pressure are optional, if the data tables are empty the corresponding function calls can not be used.

Contents

NameDescription
 densityReturn density as a function of the thermodynamic state record
 specificEnthalpyReturn specific enthalpy as a function of the thermodynamic state record
 specificHeatCapacityCpSpecific heat capacity at constant volume (or pressure) of medium
 thermalConductivityReturn thermal conductivity as a function of the thermodynamic state record

Generated at 2024-11-21T19:25:40Z by OpenModelicaOpenModelica 1.24.2 using GenerateDoc.mos