Efficient representation of the absorption line blackbody distribution function for H2O, CO2, and CO at variable temperature, mole fraction, and total pressure

Pearson, J.; Webb, Brent W.; Solovjov, Vladimir P.; Ma, Jun

doi:10.1016/j.jqsrt.2014.01.019

Cited by 99 publications

(58 citation statements)

References 28 publications

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“…The line width γ i depends on temperature T, the total pressure P, and the partial pressure of the radiating species P s as [25,26] γ i ðT; P; P s Þ ¼…”

Section: Line-by-line (Lbl) Modelmentioning

confidence: 99%

“…The only few relevant studies are perhaps those of Denison and Webb [22], Badinand and Fransson [23], Pal and Modest [24], and Pearson et al [25,26]. Denison and Webb [22] made the first attempt to study the effects of total pressure on the absorption-line blackbody distribution function (ALBDF).…”

Section: Introductionmentioning

confidence: 99%

“…However, their hyperbolic tangent correlations of ALBDF are considered out-of-date in view of the recent advance in the spectroscopic database at high temperatures, namely HITEMP2010. Recently, Person et al [25] total pressures up to 50 atm based on calculations using HITEMP2010. Badinand and Fransson [23] investigated the effect of reference pressure in the SLW model in problems with strong pressure gradients.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of total pressure on non-grey gas radiation transfer in oxy-fuel combustion using the LBL, SNB, SNBCK, WSGG, and FSCK methods

Chu

Consalvi

et al. 2016

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…The line width γ i depends on temperature T, the total pressure P, and the partial pressure of the radiating species P s as [25,26] γ i ðT; P; P s Þ ¼…”

Section: Line-by-line (Lbl) Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of total pressure on non-grey gas radiation transfer in oxy-fuel combustion using the LBL, SNB, SNBCK, WSGG, and FSCK methods

Chu

Consalvi

et al. 2016

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…Generally, the values of k T, i φ ( ) and a T T , i 0 ( ) are obtained from the absorption distribution function (ADF) [20][21][22][23]. Thus, the weight function a T T ,…”

Section: Spectral-line-based Weighted-sum-of-gray-gasesmentioning

confidence: 99%

“…This has prompted the development of simple correlation formulas for individual species at atmospheric pressure [15][16][17][18][19][20], from which kdistributions can be efficiently obtained; however, their accuracy are rarely satisfactory and sometimes may lead to serious errors [14]. Recently, Pearson et al [21,22] use absorption cross-sections instead of absorption coefficients) for CO 2 , H 2 O and CO over the full spectrum as a tool used in the SLW method, providing an alternative to solve the radiative property of nongray gas with excellent accuracy. However, this tabulation does not include gas mixtures and is relatively coarse, making it difficult to use for mixtures.…”

Section: Introductionmentioning

confidence: 99%

A FULL-SPECTRUM k-DISTRIBUTION LOOK-UP TABLE FOR RADIATIVE TRANSFER IN NONHOMOGENEOUS GASEOUS MEDIA

Wang

Modest

et al. 2015

Proceeding of Proceedings of CHT-15. 6th International Symposium on ADVANCES IN COMPUTATIONAL HEAT TRANSFER , May 25-29, 2015,

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a b s t r a c tA full-spectrum k-distribution (FSK) look-up table has been constructed for gas mixtures within a certain range of thermodynamic states for three species, i.e., CO 2 , H 2 O and CO. The k-distribution of a mixture is assembled directly from the summation of the linear absorption coefficients of three species. The systematic approach to generate the table, including the generation of the pressure-based absorption coefficient and the generation of the k-distribution, is discussed. To efficiently obtain accurate k-values for arbitrary thermodynamic states from tabulated values, a 6-D linear interpolation method is employed. A large number of radiative heat transfer calculations have been carried out to test the accuracy of the FSK look-up table. Results show that, using the FSK look-up table can provide excellent accuracy compared to the exact results. Without the time-consuming process of assembling k-distribution from individual species plus mixing, using the FSK look-up table can save considerable computational cost. To evaluate the accuracy as well as the efficiency of the FSK look-up table, radiative heat transfer via a scaled Sandia D Flame is calculated to compare the CPU execution time using the FSK method based on the narrow-band database, correlations, and the look-up table. Results show that the FSK look-up table can provide a computationally cheap alternative without much sacrifice in accuracy.

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Implementation of the spectral line‐based weighted‐sum‐of‐gray‐gases model in the finite volume method for radiation modeling in internal combustion engines

Jurić

Coelho

Priesching

et al. 2022

Intl J of Energy Research

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Summary It is well‐known that the pollutant formation processes and temperature distribution in various combustion systems that operate at high temperatures are influenced by radiation heat transport. Detailed modeling of radiation transport in internal combustion (IC) engines demands additional computational power, and hence the calculation of radiation phenomenon is not commonly applied in IC engines. At the same time, current operating conditions in IC engines consider high temperatures and recirculation of exhaust gases that enhance gas radiation. Therefore, the application of radiation models is needed to increase the correctness of radiative absorption, combustion characteristics, and the formation of pollutant emissions. In this paper, the implementation and validation of the spectral line‐based weighted‐sum‐of‐gray‐gases (SLW) model for calculating soot and gas radiation are performed. The SLW model is implemented in the computational fluid dynamics code AVL FIRE by programable user routines. The radiative transfer equation was calculated employing the finite volume method applicable for multiprocessing, moving meshes, and a mesh rezone procedure required for IC engine modeling. The validation of the SLW model is performed on one‐dimensional geometric cases that include analytical results of radiation intensity, for which agreement within 10% of the relative error was achieved. Additionally, the SLW model is applied to compression ignition engine simulations, where the obtained results are compared with the measured pressure and concentrations of NO and soot emissions. The calculated heat losses through the wall boundary layer were around 12% of the total fuel energy, approximately 9.5% of the total fuel energy was lost due to the convective flow. 7%–8% of convection heat loss was due to the higher emission than absorption of participating CO2 and H2O gasses, and the rest are net soot losses. For the observed operating cases, the computational time is increased nearly double for SLW model than in the simulation without radiation. Finally, the results calculated using SLW indicate an improved agreement with the experimental mean pressure, temperature, soot, and NO concentrations compared to simulations without radiation.

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Efficient representation of the absorption line blackbody distribution function for H2O, CO2, and CO at variable temperature, mole fraction, and total pressure

Cited by 99 publications

References 28 publications

Effects of total pressure on non-grey gas radiation transfer in oxy-fuel combustion using the LBL, SNB, SNBCK, WSGG, and FSCK methods

Effects of total pressure on non-grey gas radiation transfer in oxy-fuel combustion using the LBL, SNB, SNBCK, WSGG, and FSCK methods

A FULL-SPECTRUM k-DISTRIBUTION LOOK-UP TABLE FOR RADIATIVE TRANSFER IN NONHOMOGENEOUS GASEOUS MEDIA

Implementation of the spectral line‐based weighted‐sum‐of‐gray‐gases model in the finite volume method for radiation modeling in internal combustion engines

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