Using negative values to indicate unspecified parameters doesn't work, since
either constant in "a = a0 + a1*T" can be negative and still produce a positive
value for "a". Instead, NaN can be used for this purpose.
Since VPStandardStateTP and derived classes do not use the reference state
thermodynamic properties in the m_spthermo object, we can just install
placeholder objects there, and eliminate the wrapper clas STITbyPDSS.
In some models, SpeciesThermoInterpType objects on individual species are not
used. Instead of requiring the specification of placeholder thermo data, this
allows the base SpeciesThermoInterpType class to be used, which will throw an
exception if it is inadvertently used.
Eliminate several member variables which shadow variables of the
VPStandardState class, and actually contained the same information
calculated a different way.
Adds capability for RedlichKwongMFTP to read a database of critical properties
for Tc and Pc of common species, so that users do not need to input pureFluidParameters
for every single species, thereby reducing burden during creation of new cti files.
For any species where pureFluidParameters are not provided by the user, function
getCoeffs scans the database looking for matches. Any unmatched species will throw
an error. Currently only scans by species name string, and is only intended for
common species with well-known critical properties.
Current operation is quite slow if the table is consulted for a large number of
species. In the future, should also implement the capability to write the updated
pureFluidParameters back into the xml file, so the user only has to perform the lookup
once.
Text in the header file previously commented that the RedlichKwongMFTP
thermo class had no test suite coverage and was at risk for deprecation.
As this is no longer the case, this PR removes that language.
This only works because the "dot" function is always called with std::vector<T>::iterator as input so that "argument dependent lookup" introduces the std namespace to the function. If the dot function is called like this "dot(v.data(), v.data()+v.size(), v.data())", where "v" is a std::vector and the input are plain pointers, the compiler will not find "inner_product". The same is true for the use of "accumulate".
Create a base class (IonFlameBase) for both IonFreeFlame and BurnerIonFlame, and
use the set_axisymmetric_flow() and set_free_flow() methods to select the flow
type.
Also combines FreeFlow and AxisymmetricStagnationFlow classes into class
IdealGasFlow.
This makes it possible to implement alternative constitutive relations
(e.g. ionized or non-ideal gases) as a derived class from StFlow and have them
support all of the standard flame configurations (freely propagating, burner
stabilized, counterflow).
Previously, calls to setTemperature, setDensity, and setState_TR did not result
in the underlying Substance object being updated. In addition, the
isothermalCompressibility and thermalExpansionCoeff methods did not synchronize
the state.
Now, setting the state of the PureFluidPhase object always sets the state of the
Substance object, and no synchronization is required in property calculation
functions.
Results in increase in mixture-averaged thermal conductivity of ~1% or less, and
a similar increase in laminar flame speeds, at least for some test cases.
Modifying Reaction and Species objects alone does not affect Kinetics or
ThermoPhase objects unless the modified objects are passed back to
modifyReaction or modifySpecies.
