Recently, it has become possible to conduct line-by-line (LBL) accurate radiative heat transfer calculations in spectrally highly nongray combustion systems using the Monte Carlo method. LBL accuracy, in principle, adds little to the computational load as compared to gray calculations. However, when employing the Monte Carlo method, the original scheme for choosing appropriate emission wavenumbers for statistical photon bundles is numerically expensive. An improved wavelength selection scheme has been applied to hypersonic plasmas for Monte Carlo solvers. However, directly applying this improved scheme to combustion gases may cause significant errors. In this paper, a hybrid scheme for wavenumber selection is proposed, significantly decreasing CPU requirements compared to previous work. The accuracy of the new method is established and its time requirements are compared against the previous method.

References

References
1.
Tang
,
K. C.
, and
Brewster
,
M. Q.
,
1999
, “
Analysis of Molecular Gas Radiation: Real Gas Property Effects
,”
J. Thermophys. Heat Transfer
,
13
(
4
), pp.
460
466
.10.2514/2.6484
2.
Wang
,
A.
, and
Modest
,
M. F.
,
2007
, “
Spectral Monte Carlo Models for Nongray Radiation Analyses in Inhomogeneous Participating Media
,”
Int. J. Heat Mass Transfer
,
50
, pp.
3877
3889
.10.1016/j.ijheatmasstransfer.2007.02.018
3.
Ozawa
,
T.
,
Modest
,
M. F.
, and
Levin
,
D. A.
,
2010
, “
Spectral Module for Photon Monte Carlo Calculations in Hypersonic Nonequilibrium Radiation
,”
ASME J. Heat Transfer
,
132
, p.
023406
.10.1115/1.4000242
4.
Feldick
,
A. M.
, and
Modest
,
M. F.
,
2011
, “
An Improved Wavelength Selection Scheme for Monte Carlo Solvers Applied to Hypersonic Plasmas
,”
J. Quant. Spectrosc. Radiat. Transfer
,
112
, pp.
1394
1401
.10.1016/j.jqsrt.2011.01.028
5.
Modest
,
M. F.
,
2013
,
Radiative Heat Transfer
, 3rd ed.,
Academic Press
,
New York
.
6.
Wang
,
A.
, and
Modest
,
M. F.
,
2004
, “
Importance of Combined Lorentz–Doppler Broadening in High-Temperature Radiative Heat Transfer Applications
,”
ASME J. of Heat Transfer
,
126
(
5
), pp.
858
861
.10.1115/1.1798951
7.
Rothman
,
L. S.
,
Gordon
,
I. E.
,
Barber
,
R. J.
,
Dothe
,
H.
,
Gamache
,
R. R.
,
Goldman
,
A.
,
Perevalov
,
V. I.
,
Tashkun
,
S. A.
, and
Tennyson
,
J.
,
2010
, “
HITEMP, the High-Temperature Molecular Spectroscopic Database
,”
J. Quant. Spectrosc. Radiat. Transfer
,
111
(
15
), pp.
2139
2150
.10.1016/j.jqsrt.2010.05.001
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