Measurements of the temperature of subsonic CO2 induction plasma flows by analyzing their emission spectra

Bykova, N. G.; Kuznetsova, L. A.

doi:10.1134/1.1825132

Cited by 5 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the primary field in which the interaction of CO 2 plasmas with surfaces has been studied experimentally is probably the design of atmospheric re-entry shields. While many works in this field focuses on the radiation emitted at high temperature by CO 2 plasmas using LIF [158] or emission spectroscopy in the downstream intense plasma sources (ICP torch, arc shock tube, MW torch etc...) [159][160][161][162][163][164] (see the importance of these experiment in Sect. 6), a few studies report on the 'catalycity' of materials exposed to the plasma.…”

Section: Influence Of Surfacesmentioning

confidence: 99%

Advances in non-equilibrium $$\hbox {CO}_2$$ plasma kinetics: a theoretical and experimental review

et al. 2021

View full text Add to dashboard Cite

Numerous applications have required the study of CO2 plasmas since the 1960s, from CO2 lasers to spacecraft heat shields. However, in recent years, intense research activities on the subject have restarted because of environmental problems associated with CO2 emissions. The present review provides a synthesis of the current state of knowledge on the physical chemistry of cold CO2 plasmas. In particular, the different modeling approaches implemented to address specific aspects of CO2 plasmas are presented. Throughout the paper, the importance of conducting joint experimental, theoretical and modeling studies to elucidate the complex couplings at play in CO2 plasmas is emphasized. Therefore, the experimental data that are likely to bring relevant constraints to the different modeling approaches are first reviewed. Second, the calculation of some key elementary processes obtained with semi-empirical, classical and quantum methods is presented. In order to describe the electron kinetics, the latest coherent sets of cross section satisfying the constraints of "electron swarm" analyses are introduced, and the need for self-consistent calculations for determining accurate electron energy distribution function (EEDF) is evidenced. The main findings of the latest zero-dimensional (0D) global models about the complex chemistry of CO2 and its dissociation products in different plasma discharges are then given, and full state-to-state (STS) models of only the vibrational-dissociation kinetics developed for studies of spacecraft shields are described. Finally, two important points for all applications using CO2 containing plasma are discussed: the role of surfaces in contact with the plasma, and the need for 2D/3D models to capture the main features of complex reactor geometries including effects induced by fluid dynamics on the plasma properties. In addition to bringing together the latest advances in the description of CO2 non-equilibrium plasmas, the results presented here also highlight the fundamental data that are still missing and the possible routes that still need to be investigated.

show abstract

Section: Influence Of Surfacesmentioning

confidence: 99%

Advances in non-equilibrium $$\hbox {CO}_2$$ plasma kinetics: a theoretical and experimental review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In pure CO 2 plasmas produced in HEWTs, the radiative signature is mainly due to CO and C 2 bands, and to C and O lines [64]. The CR model development reported in this section is therefore focused on the excited states of these species.…”

Section: Elementary Processesmentioning

confidence: 99%

Elaboration of collisional–radiative models for flows related to planetary entries into the Earth and Mars atmospheres

Bultel

Annaloro

2013

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

The most relevant way to predict the excited state number density in a nonequilibrium plasma is to elaborate a collisionalradiative (CR) model taking into account most of the collisional and radiative elementary processes. Three examples of such an elaboration are given in this paper in the case of various plasma flows related to planetary atmospheric entries. The case of theoretical determination of nitrogen atom ionization or recombination global rate coefficients under electron impact is addressed first. The global rate coefficient can be implemented in multidimensional computational fluid dynamics calculations. The case of relaxation after a shock front crossing a gas of N 2 molecules treated in the framework of the Rankine-Hugoniot assumptions is also studied. The vibrational and electronic specific CR model elaborated in this case allows one to understand how the plasma reaches equilibrium and to estimate the role of the radiative losses. These radiative losses play a significant role at low pressure in the third case studied. This case concerns CO 2 plasma jets inductively generated in high enthalpy wind tunnels used as ground test facilities. We focus our attention on the behaviour of CO and C 2 electronic excited states, the radiative signature of which can be particularly significant in this type of plasma. These three cases illustrate the elaboration of CR models and their coupling with balance equations.

show abstract

Recombination coefficient of atomic oxygen on ceramic materials in a CO2 plasma flow for the simulation of a Martian entry

Balat‐Pichelin

Iacono

Boubert

2016

Ceramics International

View full text Add to dashboard Cite

Measurements of the temperature of subsonic CO2 induction plasma flows by analyzing their emission spectra

Cited by 5 publications

References 2 publications

Advances in non-equilibrium $$\hbox {CO}_2$$ plasma kinetics: a theoretical and experimental review

Advances in non-equilibrium $$\hbox {CO}_2$$ plasma kinetics: a theoretical and experimental review

Elaboration of collisional–radiative models for flows related to planetary entries into the Earth and Mars atmospheres

Recombination coefficient of atomic oxygen on ceramic materials in a CO2 plasma flow for the simulation of a Martian entry

Contact Info

Product

Resources

About