Calculation of two-temperature thermodynamic and transport properties of argon-nitrogen plasma

Pan Zi-Han; Chen Xian-Hui; Wang Cheng; Xia Wei-Dong

doi:10.7498/aps.70.20202040

Abstract

The thermodynamic and transport properties of plasmas over a wide range of temperature and pressure are necessary to model the heat transfer and flow processes in plasma. In this study, the plasma composition is solved by simultaneous Saha equation, Dalton's partial pressure law and charge quasi-neutral equation. The thermodynamic properties of plasma computation are based on the kinetic theory for ideal gas. While the calculation of transport properties is based on the solution of Boltzmann’s equation by the Chapman-Enskog method. The thermodynamic and transport properties of argon-nitrogen plasma at pressures of 0.1, 1.0 and 10.0 atm, electron temperatures ranging from 300 to 30000 K, and non-local thermodynamic equilibrium (NLTE), where the electron temperature is not equal to the temperature of heavy particles,, are investigated by using the above method. The results show that the value of non-equilibrium parameter has a great influence on the properties of the argon-nitrogen mixture. With the increase of non-equilibrium parameter, the dissociation reaction requires a higher electron temperature, which leads the dissociation peak to shift to a higher electron temperature. The ionization and dissociation reaction will enter into the high temperature region due to the increase in pressure. This change will affect the peak position and value of the specific heat, viscosity, thermal conductivity and electrical conductivity of plasma. In addition, since the electronic translational thermal conductivity and electrical conductivity mainly depend on the electron number density, when non-equilibrium parameter and pressure increase, the electron number density will increase at high electron temperature, thus improving the electronic translational thermal conductivity and electrical conductivity. Under the condition of local thermodynamic equilibrium, the transport properties of argon-nitrogen plasma obtained by calculation are in good agreement with previously reported data.

Keywords:

argon-nitrogen plasma /
thermodynamic and transport property /
non-local thermodynamic equilibrium plasma

Authors and contacts

School of Engineering Science, University of Science and Technology of China, Hefei 230022, China

Corresponding author: Chen Xian-Hui, chenxian@mail.ustc.edu.cn ; Xia Wei-Dong, xiawd@ustc.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11675177，11875256)

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References

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Cited By

图 1 不同非平衡度下50%$ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物中各粒子数密度随电子温度的变化(1 atm)

Figure 1. Electron temperature dependence of composition of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter (1 atm).

DownLoad: Full-Size Img PowerPoint

图 2 LTE条件下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物中各粒子数密度随电子温度的变化　(a) 0.1 atm; (b) 0.5 atm; (c) 1.0 atm; (d) 10.0 atm

Figure 2. Electron temperature dependence of composition of 50% argon-50% nitrogen mixtures under LTE condition: (a) 0.1 atm; (b) 0.5 atm; (c) 1.0 atm; (d) 10.0 atm.

DownLoad: Full-Size Img PowerPoint

图 3 不同压力和非平衡度下50%$ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物热力学性质随电子温度的变化

Figure 3. Electron temperature dependence of thermodynamic properties of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter and pressure.

DownLoad: Full-Size Img PowerPoint

图 4 不同非平衡参数下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物反应热导率随电子温度的变化　(a)电子反应热导率; (b) 重粒子反应热导率; (c) 总反应热导率(1 atm)

Figure 4. Electron temperature dependence of reactive thermal conductivity of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter: (a) Reactive thermal conductivity of electrons; (b) reactive thermal conductivity of heavy particles; (c) total reactive thermal conductivity(1 atm).

DownLoad: Full-Size Img PowerPoint

图 5 不同压力和非平衡度下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物热导率随电子温度的变化, 符号$ \times $代表Murphy和Arundelli^[9]计算结果

Figure 5. Electron temperature dependence of total thermal conductivity of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter and pressure, the symbol $ \times $ shows results of Murphy and Arundelli^[9].

DownLoad: Full-Size Img PowerPoint

图 6 不同压力和非平衡度下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物电子平动热导率随电子温度的变化

Figure 6. Electron temperature dependence of electron translational thermal conductivity of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter and pressure.

DownLoad: Full-Size Img PowerPoint

图 7 不同压力和非平衡度下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物热导率随电子温度的变化, 符号$ \times $代表Murphy和Arundelli^[9]计算结果

Figure 7. Electron temperature dependence of viscosity of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter and pressure, the symbol $ \times $ shows results of Murphy and Arundelli^[9].

DownLoad: Full-Size Img PowerPoint

图 8 不同压力和非平衡度下50% $ {\rm{Ar}} $和50% $ {\rm{N}}_{2} $混合物电导率随电子温度的变化, 符号$ \times $代表Murphy和Arundelli^[9]计算结果

Figure 8. Electron temperature dependence of electrical conductivity of 50% argon-50% nitrogen mixtures for different values of non-equilibrium parameter and pressure, the symbol $ \times $ shows results of Murphy and Arundelli^[9].

DownLoad: Full-Size Img PowerPoint

表 1 中性粒子之间相互作用

Table 1. Data source of neutral-neutral interaction

相互作用	方法	文献
Ar-Ar	HFDTCS2势	[31]
N₂-N₂	Exponential势	[32]
N₂-N	Exponential势	[32]
N-N	碰撞积分表	[33]
N₂-Ar	ESMV势	[34]
$ {\rm{Ar}} $-N	Lennard-Jones势	[34]

DownLoad: CSV

表 2 中性粒子与离子相互作用

Table 2. Data source of neutral-ion interaction.

相互作用	弹性碰撞	文献	非弹性碰撞	文献
Ar⁺-Ar	²∑_1/2u Morse势	[35]	∑ 电荷转移	[35]
	²∑_1/2g Exponential势	[35]	Π 电荷转移	[35]
	²Π_3/2g Morse势	[35]
	²Π_3/2u Exponential势	[35]
	²Π_1/2g Morse势	[35]
	²Π_1/2u Exponential势	[35]
${\rm{N}}_2^+ $-N₂	极化势		积分输运截面	[36]
${\rm{N}}_2^+ $-N	极化势
N⁺-N₂	极化势		积分输运截面	[36]
N⁺-N₂	碰撞积分表	[37]	碰撞积分表	[37]
Ar⁺-N₂	极化势
Ar⁺-N	极化势
${\rm{N}}_2^+ $-Ar	极化势
N⁺-Ar	³∑^– Morse势	[38]
	³Π Morse势	[38]
Xⁿ⁺-X, Y (n ≥ 2)	极化势

DownLoad: CSV

表 3 电子与中性粒子相互作用

Table 3. Data source of electron-neutral interaction

相互作用	方法	文献
e-N₂	积分输运截面	[39]
e-N	积分输运截面	[40]
e-Ar	积分输运截面	[26]

DownLoad: CSV

[1]	Fan X B, Ishigaki T 1998 Thin Solid Films. 316 174 Google Scholar
[2]	Abrar M, Farwa G U, Naseer S, Saeed A, Khan A W, Iqbal Z, Hussain S T, Zakaullah M 2013 Curr. Appl. Phys. 13 567 Google Scholar
[3]	Selvan B, Ramachandran K, Pillai B C, Subhakar D 2011 J. Therm. Spray Technol. 20 534 Google Scholar
[4]	Dias A, Bundaleski N, Tatarova E, Dias F M, Abrashev M, Cvelbar U, Teodoro O M N D, Henriques J 2016 J. Phys. D: Appl. Phys. 49 055307 Google Scholar
[5]	Yamada M, Inamoto T, Fukumoto M, Yasui T 2004 Mater. Trans. 45 3304 Google Scholar
[6]	Hirschfelder J, Curtiss C F, Bird R 1954 Molecular Theory of Gases and Liquids (New York: John Wiley and Sons) p464
[7]	Aubreton J, Elchinger M F, Hacala A, Michon U 2009 J. Phys. D: Appl. Phys. 42 095206 Google Scholar
[8]	Murphy A B 2000 Plasma Chem. Plasma Process. 20 279 Google Scholar
[9]	Murphy A B, Arundelli C J 1994 Plasma Chem. Plasma Process. 14 451 Google Scholar
[10]	Murphy A B, Tam E 2014 J. Phys. D: Appl. Phys. 47 295202 Google Scholar
[11]	Sourd B, Aubreton J, Elchinger M F, Labrot M, Michon U 2006 J. Phys. D: Appl. Phys. 39 1105 Google Scholar
[12]	Devoto R S 1967 Phys. Fluids. 10 2105 Google Scholar
[13]	Rat V, André P, Aubreton J, Elchinger M F, Fauchais P, Lefort A 2001 Phys. Rev E. 64 026409 Google Scholar
[14]	Wu Y, Chen Z X, Yang F, Cressault Y, Murphy A B, Guo A, Liu Z R, Rong M Z, Sun H 2015 J. Phys. D: Appl. Phys. 48 415205 Google Scholar
[15]	Aubreton J, Elchinger M F, Fauchais P 1998 Plasma Chem. Plasma Process. 18 1 Google Scholar
[16]	Colombo V, Ghedini E, Sanibondi P 2008 Prog. Nucl. Energy. 50 921 Google Scholar
[17]	Ghorui S, Heberlein J V R, Pfender E 2008 Plasma Chem. Plasma Process. 28 553 Google Scholar
[18]	Ghorui S, Heberlein J V R, Pfender E 2007 Plasma Chem. Plasma Process. 27 267 Google Scholar
[19]	王海兴, 孙素蓉, 陈士强 2012 物理学报 61 195203 Google Scholar Wang H X, Sun S R, Chen S Q 2012 Acta Phys. Sin. 61 195203 Google Scholar
[20]	Wang H X, Chen S Q, Chen X 2012 J. Phys. D: Appl. Phys. 45 165202 Google Scholar
[21]	Aubreton A, Elchinger M F 2003 J. Phys. D: Appl. Phys. 36 1798 Google Scholar
[22]	Aubreton J, Elchinger M F, Rat V, Fauchais P 2003 J. Phys. D: Appl. Phys. 37 34
[23]	Colombo V, Ghedini E, Sanibondi P 2009 J. Phys. D: Appl. Phys. 42 055213 Google Scholar
[24]	Rat V, André P, Aubreton J, Elchinger M F, Fauchais P, Lefort A 2002 Plasma Chem. Plasma Process. 22 453 Google Scholar
[25]	Rat V, André P, Aubreton J, Elchinger M F, Fauchais P, Lefort A 2002 Plasma Chem. Plasma Process. 22 475 Google Scholar
[26]	Rat V, André P, Aubreton J, Elchinger M F, Fauchais P, Vacher D 2002 J. Phys. D: Appl. Phys. 35 981 Google Scholar
[27]	Godin D, Trépanier J Y 2004 Plasma Chem. Plasma Process. 24 447 Google Scholar
[28]	van de Sanden M C M, Schram P P J M, Peeters A G, van der Mullen J A M, Kroesen G M W 1989 Phys. Rev. A 40 5273 Google Scholar
[29]	Kramida A, Ralchenko Y, Reader J, NIST ASD Team https://www.nist.gov/pml/atomic-spectra-database [2020-12-1]
[30]	Chase M W, Davies C A, Downey J R, Frurip D J, McDonald R A, Syverud A N https://janaf.nist.gov/ [2020-12-1]
[31]	Aziz R A, Slaman M J 1990 J. Chem. Phys. 92 1030 Google Scholar
[32]	Capitelli M, Devoto R S 1973 Phys. Fluids. 16 1835 Google Scholar
[33]	Levin E, Partridge H, Stallcop J R 1990 J. Thermophys Heat Transfer 4 469 Google Scholar
[34]	Brunetti B, Liuti G, Luzzatti E, Pirani F, Volpi G G 1983 J. Chem. Phys. 79 273 Google Scholar
[35]	Murphy A B 1995 Plasma Chem. Plasma Process 15 279 Google Scholar
[36]	Phelps A V 1991 J. Phys. Chem. Ref. Data. 20 557 Google Scholar
[37]	Stallcop J R, Partridge H, Levin E 1991 J. Chem. Phys. 95 6429 Google Scholar
[38]	Murphy A B 1993 Phys. Rev. E 48 3594 Google Scholar
[39]	Engelhardt A G, Phelps A V, Risk C G 1964 Phys. Rev. 135 1566 Google Scholar
[40]	Neynaber R H, Marino L L, Rothe E W, Trujillo S M 1963 Phys. Rev. 129 2069 Google Scholar
[41]	Mason E A, Munn R J, Smith F J 1967 Phys. Fluids. 10 1827 Google Scholar
[42]	Devoto R S 1966 Phys. Fluids. 9 1230 Google Scholar
[43]	Chen X, Li H P 2003 Int. J. Heat Mass Transfer 46 1443 Google Scholar
[44]	Wang W Z, Rong M Z, Yan J D, Murphy A B, Spencer J W 2011 Phys. Plasmas. 18 113502 Google Scholar

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