belfem::gastables::InputAlpha Class Reference

Reader for cubicalpha.inp, the fitted alpha function coefficients of Mahmoodi and Sedigh ( doi 10.1016/j.fluid.2016.12.015 ). More...

#include <cl_GT_InputAlpha.hpp>

Inheritance diagram for belfem::gastables::InputAlpha:

Collaboration diagram for belfem::gastables::InputAlpha:

Public Member Functions
	InputAlpha (const string &aPath)
	~InputAlpha ()=default
bool	entry_exists (GasData *aData)
void	read_data (GasData *aData)
Public Member Functions inherited from belfem::Ascii
	Ascii (const string &aPath, const enum FileMode &aMode)
virtual	~Ascii ()
bool	save ()
void	print (const std::string &aLine)
index_t	length () const
	return the number of lines
string &	line (const index_t aLineNumber)
const string &	line (const index_t aLineNumber) const

Additional Inherited Members
Protected Attributes inherited from belfem::Ascii
string	mPath
const FileMode	mMode
Cell< string >	mBuffer
bool	mChangedSinceLastSave = false

Detailed Description

Reader for cubicalpha.inp, the fitted alpha function coefficients of Mahmoodi and Sedigh ( doi 10.1016/j.fluid.2016.12.015 ).

Records are keyed on CAS number rather than on species label, which is what lets the join work across the different nomenclatures of the source tables. read_data applies the structural factors of the paper's Eq. ( 14 ) - c1 = 2 C1, c2 = -C2^2, c3 = (2/3) C3^3 - so the evaluator downstream sees a plain polynomial and the transform lives in exactly one place.

It also overwrites the critical temperature and pressure of the GasData with the values of this file, so that the alpha function and the critical point it was fitted against stay consistent.

A species with no record here simply keeps has_cubic() false and falls back to the Coquelet correlation, which needs only the acentric factor. That is a designed fallback, not a failure.

Constructor & Destructor Documentation

InputAlpha()

belfem::gastables::InputAlpha::InputAlpha

(

const string &

aPath

)

~InputAlpha()

belfem::gastables::InputAlpha::~InputAlpha ( )

default

Member Function Documentation

entry_exists()

bool belfem::gastables::InputAlpha::entry_exists

(

GasData *

aData

)

read_data()

void belfem::gastables::InputAlpha::read_data

(

GasData *

aData

)

---

The documentation for this class was generated from the following files:

• src/physics/gastables/cl_GT_InputAlpha.hpp
• src/physics/gastables/cl_GT_InputAlpha.cpp