cs_fuel_physprop1.f90 File Reference

Calculation of physic properties of the gaseous phase. More...

Functions/Subroutines
subroutine	cs_fuel_physprop1 (ncelet, ncel, f1m, f2m, f3m, f4m, f5m, f6m, f7m, f8m, f9m, fvp2m, enth, enthox, rom1)

Detailed Description

Calculation of physic properties of the gaseous phase.

Cell values

Temperature, mass density and average concentrations (use of a PDF rectangle-dirac) ==> fast chemistry model in 3 points Extension for 3 fuels for pulverized coal

Heterogeneous reactions

• Pyrolysis Elementary composition of the mol of volatile materials The reactive coal is written C(1)H(ALPHA)O(BETA) -(k1)-> ALPHA/4 CH4 + BETA CO + (1-ALPHA/4-BETA) Coke Reactive coal -(k2)-> ALPHA/Y CXHY + BETA CO + (1-ALPHA/RYSX-BETA) Coke With RYSX = Y/X
• Heterogeneous combustion Coke + 1/2 (O2 + XSI N2) -> CO + XSI/2 N2
• Gas-phase reaction (4/(4-RYSX)) CH4 + (O2 + XSI N2) -(1)-> 4/X/(4-RYSX)*CXHY + 2 H2O
  • XSI N2 CXHY + X/4*(2+RYSX) (O2 + XSI N2) -(2)-> X CO + Y/2 H2O

X/4*(2+RYSX)*XSI N2 CO + 1/2 (O2 + XSI N2) -(3)-> CO2 + XSI/2 N2 Variable choice

• F1 is the mass fractions of volatile materials: CH4 + CO
• F2 is the mass fractions of volatile materials: CXHY + CO
• F3 is the mass fraction of carbon coming from the heterogeneous combustion

Let Y be the mass fractions and Z be the concentrations [moles/kg] index f before reaction, b final

Joint PDF degenerated into a 1D PDF of type RECTANGLE - DIRAC

Function/Subroutine Documentation

cs_fuel_physprop1()

subroutine cs_fuel_physprop1	(	integer	ncelet,
		integer	ncel,
		double precision, dimension(ncelet)	f1m,
		double precision, dimension(ncelet)	f2m,
		double precision, dimension(ncelet)	f3m,
		double precision, dimension(ncelet)	f4m,
		double precision, dimension(ncelet)	f5m,
		double precision, dimension(ncelet)	f6m,
		double precision, dimension(ncelet)	f7m,
		double precision, dimension(ncelet)	f8m,
		double precision, dimension(ncelet)	f9m,
		double precision, dimension(ncelet)	fvp2m,
		double precision, dimension(ncelet)	enth,
		double precision, dimension(ncelet)	enthox,
		double precision, dimension(ncelet)	rom1
	)

Parameters

[in]	ncelet	number of extended (real + ghost) cells
[in]	ncel	number of cells
[in]	f1m	average of tracer 1 mvl [CHx1+CO]
[in]	f2m	average of tracer 2 mvl [CHx2+CO]
[in]	f3m	average of tracer 3 (CO heterogeneous comb.)
[in]	f4m	average of tracer 4 (air)
[in]	f5m	average of tracer 5 (H2O)
[in]	f6m	average of tracer 6 (water mass fraction)
[in]	f7m	average of tracer 7 (coal oxidyzed by O2 fraction)
[in]	f8m	average of tracer 8 (coal gasified by CO2 fraction)
[in]	f9m	average of tracer 9 (coal gasified by H2O fraction)
[in]	fvp2m	f1f2 variance
[in]	enth	enthalpy in either of the gas or of the mixture
[in]	enthox	oxydant enthalpy
[out]	rom1	gas density