Computational Study of the Wall Electrization Limiting Characteristics at the Low-Temperature Plasma Flow

Authors: Fedotova K.V., Yagodnikov D.A. Published: 11.03.2023
Published in issue: #1(106)/2023  
DOI: 10.18698/1812-3368-2023-1-145-160

Category: Physics | Chapter: Thermal Physics and Theoretical Heat Engineering  
Keywords: low-temperature plasma, electrization, metal wall, dielectric wall, combustion chamber, primary emission current, secondary electron emission


The purpose of this work lies in computational study of the floating potential distribution in the perturbed zone adjacent to the wall in the ionized flow of low-temperature plasma. As a result of electrophysical interaction, primary and secondary emission currents appear on the wall surface. Based on the probe theory, mathematical model was developed to determine the current values of the combustion products ionized flow and spatial potential on the surface of walls in the power plant flow path. Parametric calculation of the potential on the wall at its contact with the low-temperature plasma was carried out without and taking into account the secondary emission processes. The results obtained taking into account only the primary currents demonstrate alteration in the potential on the wall in the range of --(1.5--0.5) V at the plasma flow temperature of 1,000--3,500 K. Results are presented of the design research of the wall floating potential dependence with various secondary electron emission coefficients in comparison with the known experimental results. Metal walls were characterized by formation of a shielding layer, where only the primary currents appeared. It is shown that their floating potential changes the sign in dielectric walls, as coefficient of the secondary electron emission decreases. Parametric calculation of the current value near the wall was carried out showing that with an increase in pressure by 0.1--10 MPa, the current value was changing in the range of 0.005--0.025 A

The work was supported by the State Program for Fundamental Research of the Ministry of Education and Science of the Russian Federation (no. 0705-2020-0044).

Please cite this article in English as:

Fedotova K.V., Yagodnikov D.A. Computational study of the wall electrization limiting characteristics at the low-temperature plasma flow. Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 2023, no. 1 (106), pp. 145--160 (in Russ.). DOI: https://doi.org/10.18698/1812-3368-2023-1-145-160


[1] Yagodnikov D.A., Rudinskii A.V. Diagnostics of rocket and jet engines through characteristics of the intrinsic electromagnetic field of combustion products. High. Temp., 2017, vol. 55, no. 5, pp. 808--824. DOI: https://doi.org/10.1134/S0018151X17050200

[2] Lawton J., Weinberg F.J. Electrical aspects of combustion. Clarendon P., 1969.

[3] Guy A., Fromentin-Denoziere B., Phan H-K., et al. Ionized solid propellant rocket exhaust plume: MiLES simulation and comparison to experiment. 7th EUCASS, 2017, pp. 1--19.

[4] Gueyffier D., Fromentin-Denoziere B., Simon J., et al. Numerical simulation of ionized rocket plumes. J. Thermophys. Heat. Trans., 2014, vol. 28, no. 2, pp. 218--225. DOI: https://doi.org/10.2514/1.T4239

[5] Yagodnikov D.A., Voronetskii A.V., Pushkin N.M. Electrification of nozzle in a liquid rocket engine. Combust. Explos. Shock Waves, 1995, vol. 31, no. 4, pp. 450--454. DOI: https://doi.org/10.1007/BF00789365

[6] Pinchuk V.A. Jet engine electrification as a phenomenon reflecting the evolution of charge instability in an outflowing combustion product mixture. Tech. Phys., 1997, vol. 42, no. 8, pp. 872--876. DOI: https://doi.org/10.1134/1.1258733

[7] Gafurov R.A., Solovyev V.V. Diagnostika vnutrikamernykh protsessov v energeticheskikh ustanovkakh [Diagnosis of intrachamber processes in power plants]. Moscow, Mashinostroenie Publ., 1991.

[8] Rudinskii A.V., Yagodnikov D.A., Ryzhkov S.V., et al. Features of intrinsic electric field formation in low-temperature oxygen--methane plasma. Tech. Phys. Lett., 2021, vol. 47, no. 7, pp. 520--523. DOI: https://doi.org/10.1134/S1063785021050278

[9] Aronowitz L. Electrostatic potential generated by rockets on vehicles in space. IEEE Trans. Electromagn. Compat., 1968, vol. EMC-10, iss. 4, pp. 341--346. DOI: https://doi.org/10.1109/TEMC.1968.302975

[10] Nagel’ Yu.A. Electrical charging of engines in the efflux of combustion products. Experimental results. Tech. Phys., 1999, vol. 44, no. 8, pp. 918--922. DOI: https://doi.org/10.1134/1.1259405

[11] Kotelnikov V.A., Kotelnikov M.V., Filippov G.S. Fizicheskoe, matematicheskoe i chislennoe modelirovanie pristenochnoy plazmy primenitelno k sistemam aviatsionno-kosmicheskoy tekhniki i volnovym tekhnologiyam [Physical, mathematical and numerical models of near-wall plasma in relation to systems of aerospace engineering and wave technologies]. Moscow, Izhevsk, IKI Publ., 2018.

[12] Hastings D., Garrett H. Spacecraft-environment interactions. Cambridge Univ. Press, 1996.

[13] Bogdanov V.V. Model of calculation of volume electrization of high-resistance dielectrics in space. Vestnik KRAUNTs. fiz.-mat. nauki [Bulletin KRASEC. Physical and Mathematical Sciences], 2018, vol. 24, no. 4, pp. 66--89 (in Russ.). DOI: https://doi.org/10.18454/2079-6641-2018-24-4-66-89

[14] Pushkin N.M. Elektrofizika raketno-kosmicheskogo poleta i elektrofizicheskie metody kontrolya i diagnostiki izdeliy RKT [Electrophysics of rocket-space flight and electrophysical methods of control and diagnostics of RCT products]. Moscow, Nauchnyy consultant Publ., 2016.

[15] Novikov L.S. Vzaimodeystvie kosmicheskikh apparatov s okruzhayushchey plazmoy [Interaction of space vehicles with surrounding plasma]. Moscow, Universitetskaya kniga Publ., 2006.

[16] Thompson W.B. An introduction to plasma physics. Addison-Wesley, 1962.

[17] Morozov A.I. Vvedenie v plazmodinamiku [Introduction to plasmadynamics]. Moscow, FIZMATLIT Publ., 2006.

[18] Trusov B.G. [TERRA software system for modeling phase and chemical equilibria at high temperatures]. III Mezhdunar. simp. "Gorenie i plazmokhimiya" [III Int. Symp. "Combustion and Plasma Chemistry"]. Alma-Ata, KAzNU Publ., 2005, pp. 52--57 (in Russ.).