Transport coefficients in thermal plasma. Applications to Mars and Titan atmospheres

André, Pascal; Aubreton, J.; Clain, Stéphane; Dudeck, Michel; Duffour, Emmanuel; Elchinger, Marie-Françoise; Izrar, Boujema; Rochette, David; Touzani, Rachid; Vacher, Damien

doi:10.1140/epjd/e2010-00036-5

Cited by 36 publications

(21 citation statements)

References 57 publications

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“…In general, it can be said that the character of the dependences is consistent with similar dependencies known from the literature [21,[25][26][27][28][29][30][31].…”

Section: Resultssupporting

confidence: 86%

“…If the required cross section was not found in the book [29] then we acted as follows. When considering collisions between two neutral components it was assumed that the cross section can be described by the Lennard-Jones interaction potential [23], the main interaction parameters were taken from [30,31] using rules given in [31]. When considering collisions between neutral and charged components it was assumed that the cross section can be described by the polarization potential, the parameters of which were taken from [30,31].…”

Section: Initial Data For Calculationmentioning

confidence: 99%

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Mathematical simulation of operation of multi-chamber arrester for lightning protection of power lines: calculation of thermophysical properties of nonequilibrium plasma

et al. 2018

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Protection of important energy facilities from direct lightning impact requires the creation of special devices for lightning protection in particular multi-chamber arresters. To improve the efficiency of multi-chamber arrester operation it is necessary to perform mathematical simulation of the physical processes that take place inside such devices. To develop a mathematical model of arc discharge it is necessary to know the thermodynamic and transport properties of the plasma depending on temperature and pressure. In the article the dependences of the thermodynamic and transport properties of plasma in a multi-chamber arrester were obtained for the two-temperature plasma model for the electron temperature range Te = 300–30 000 K, the nonequilibrium degree range is 1–5, and the pressure range p = 0.3–1 atm.

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“…In general, it can be said that the character of the dependences is consistent with similar dependencies known from the literature [21,[25][26][27][28][29][30][31].…”

Section: Resultssupporting

confidence: 86%

Section: Initial Data For Calculationmentioning

confidence: 99%

Mathematical simulation of operation of multi-chamber arrester for lightning protection of power lines: calculation of thermophysical properties of nonequilibrium plasma

et al. 2018

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“…Transport coefficients for neutralneutral interactions are derived according to Lennard-Jones (12-6) data available in Svehla (1962), McGee et al (1998) and Capitelli et al (2000). Combination rules for those polyatomic species (André et al 2010), whose potential parameters are not available in the literature, are used. We employ the screened Coulomb (Debye-Hückel) potential shielded at the Debye length for charged-charged collisions.…”

Section: The Mutation++ Librarymentioning

confidence: 99%

A self-consistent method for the simulation of meteor trails with an application to radio observations

Bariselli

Boccelli

Dias

et al. 2020

A&A

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Context. Radio-based techniques allow for a meteor detection of 24 h. Electromagnetic waves are scattered by the electrons produced by the ablated species colliding with the incoming air. As the electrons dissipate in the trail, the received signal decays. The interpretation of these measurements entails complex physical modelling of the flow. Aims. In this work, we present a procedure to compute extensive meteor trails in the rarefied segment of the trajectory. This procedure is a general and standalone methodology, which provides meteor physical parameters at given trajectory conditions, without the need to rely on phenomenological lumped models. Methods. We started from fully kinetic simulations of the evaporated gas that describe the nonequilibrium in the flow and the ionisation collisions experienced by metals in their encounter with air molecules. These simulations were employed as initial conditions for performing detailed chemical and multicomponent diffusion calculations of the extended trail, in order to study the processes which lead to the extinction of the plasma. In particular, we focused on the evolution of the trail generated by a 1 mm meteoroid flying at 32 km s−1, above 80 km. We retrieved the ambipolar diffusion coefficient and the electron line density and compared the outcome of our computations with classical results and observational fittings. Finally, the electron field was employed to estimate the resulting reflected signal, using classical radio-echo theory for underdense meteors. Results. A global and constant diffusion coefficient is sufficient to reproduce numerical profiles. A good agreement is found when we compare the extracted diffusion coefficients with theory and observations.

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“…Then, the next papers have been focused on specific applications such as low voltage circuit breakers with or without metallic vapors, 73,78-83 medium voltage circuit breakers, 84 the high voltage circuit breakers, [85][86][87] powders synthesis, 88,89 the atmospheric reentry, [90][91][92][93][94][95] or the recent applications focused on the production of nanostrucutres, 96 syngas, 97 optimisation of the lamps, 98,99 pollutants detections. 100,101 By using the Chapman-Enskog method 102 firstly adapted for monoatomic and neutral gases and then extended to ionized gases, the transport coefficients are approximated using Sonine polynomials and require the knowledge of the particle number densities and other functions called "collision integrals" which strongly vary according to the temperature, according to the potential of interaction used to characterize the collision between the particles, and according to the order of approximation chosen for the Sonine development.…”

Section: Estimation Of the Transport Coefficientsmentioning

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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Transport coefficients in thermal plasma. Applications to Mars and Titan atmospheres

Cited by 36 publications

References 57 publications

Mathematical simulation of operation of multi-chamber arrester for lightning protection of power lines: calculation of thermophysical properties of nonequilibrium plasma

Mathematical simulation of operation of multi-chamber arrester for lightning protection of power lines: calculation of thermophysical properties of nonequilibrium plasma

A self-consistent method for the simulation of meteor trails with an application to radio observations

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

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