Spectroscopic data for the prediction of radiative transfer in CO2–N2 plasmas

Babou, Yacine; Rivière, Philippe; Perrin, Marie‐Yvonne; Soufiani, Anouar

doi:10.1016/j.jqsrt.2008.09.007

Cited by 54 publications

(32 citation statements)

References 89 publications

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“…56,57 When data are not available for a molecular species, its radiation is neglected. More details on this complex calculation can be found in the works of the EM2C laboratory 58,59 and Laplace Laboratory. 48 method (with the Mean absorption Coefficients defined according to different mean functions) are used in this paper.…”

Section: Estimation Of the Radiative Lossesmentioning

confidence: 99%

Basic knowledge on radiative and transport properties to begin in thermal plasmas modelling

Cressault

2015

AIP Advances

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This paper has for objectives to present the radiative and the transport properties for people beginning in thermal plasmas. The first section will briefly recall the equations defined in numerical models applied to thermal plasmas; the second section will particularly deal with the estimation of radiative losses; the third part will quickly present the thermodynamics properties; and the last part will concern the transport coefficients (thermal conductivity, viscosity and electrical conductivity of the gas or mixtures of gases). We shall conclude the paper with a discussion about the validity of these results the lack of data for some specific applications, and some perspectives concerning these properties for non-equilibrium thermal plasmas. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx

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Section: Estimation Of the Radiative Lossesmentioning

confidence: 99%

Basic knowledge on radiative and transport properties to begin in thermal plasmas modelling

Cressault

2015

AIP Advances

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“…By investigating the composition densities of CO-H 2 plasma, the main diatomic molecules retained for our calculations are O 2 , C 2 , H 2 , OH, CO, CO þ , CH, and CH þ . The choice of the electronic systems retained for the molecules CO, CO þ , C 2 and O 2 was influenced by the works of Babou et al [22] for CO 2 mixtures. For H 2 , OH, CH and CH þ , we have pragmatically retained all the electronic systems for which sufficient data were found in the literature to compute the energy levels and to obtain or calculate the transition probabilities.…”

Section: Molecular Diatomic Linesmentioning

confidence: 99%

Net emission coefficient for CO–H2 thermal plasmas with the consideration of molecular systems

Billoux

Cressault

Gleizes

2015

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…Recent reviews of molecular band system data for a CO 2 -N 2 gas [114][115][116][117] provide valuable insight into the uncertainties for many of the bands systems resulting from diatomic ablation products. Comparisons between experimental measurements and various predictions for the oscillator strengths for the C 2 and CO molecules are made in these papers.…”

Section: Molecular Band Systems For Ablation Productsmentioning

confidence: 99%

Assessment of Radiative Heating Uncertainty for Hyperbolic Earth Entry

Johnston

Mazaheri

Gnoffo

et al. 2011

42nd AIAA Thermophysics Conference

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This paper investigates the shock-layer radiative heating uncertainty for hyperbolic Earth entry, with the main focus being a Mars return. In Part I of this work, a baseline simulation approach involving the LAURA Navier-Stokes code with coupled ablation and radiation is presented, with the HARA radiation code being used for the radiation predictions. Flight cases representative of peak-heating Mars or asteroid return are defined and the strong influence of coupled ablation and radiation on their aerothermodynamic environments are shown. Structural uncertainties inherent in the baseline simulations are identified, with turbulence modeling, precursor absorption, grid convergence, and radiation transport uncertainties combining for a +34% and −24% structural uncertainty on the radiative heating. A parametric uncertainty analysis, which assumes interval uncertainties, is presented. This analysis accounts for uncertainties in the radiation models as well as heat of formation uncertainties in the flowfield model. Discussions and references are provided to support the uncertainty range chosen for each parameter. A parametric uncertainty of +47.3% and −28.3% is computed for the stagnation-point radiative heating for the 15 km/s Mars-return case. A breakdown of the largest individual uncertainty contributors is presented, which includes C3 Swings cross-section, photoionization edge shift, and Opacity Project atomic lines. Combining the structural and parametric uncertainty components results in a total uncertainty of +81.3% and −52.3% for the Mars-return case.In Part II, the computational technique and uncertainty analysis presented in Part I are applied to 1960s era shock-tube and constricted-arc experimental cases. It is shown that experiments contain shock layer temperatures and radiative flux values relevant to the Mars-return cases of present interest. Comparisons between the predictions and measurements, accounting for the uncertainty in both, are made for a range of experiments. A measure of comparison quality is defined, which consists of the percent overlap of the predicted uncertainty bar with the corresponding measurement uncertainty bar.

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Spectroscopic data for the prediction of radiative transfer in CO2–N2 plasmas

Cited by 54 publications

References 89 publications

Basic knowledge on radiative and transport properties to begin in thermal plasmas modelling

Basic knowledge on radiative and transport properties to begin in thermal plasmas modelling

Net emission coefficient for CO–H2 thermal plasmas with the consideration of molecular systems

Assessment of Radiative Heating Uncertainty for Hyperbolic Earth Entry

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