Abstract
An experimental study of the heat transfer in a 100 kW high-frequency plasmatron was performed for three configurations of a discharge channel with a conical, water-cooled nozzle with exit diameters of 30 mm, 40 mm, and 50 mm. The dynamic pressures and heat fluxes to a water-cooled copper model with a 20-mm front flat face were measured in high-enthalpy subsonic air jets in a generator power range between 20 and 75 kW. The flow in the discharge channel and the subsonic dissociated air jet flow over the model were numerically studied under the experimental conditions in a high-frequency plasmatron with the Navier-Stokes and the Maxwell equations. Based on a comparison of the experimental and calculated data on heat transfer, the enthalpy at the outer edge of the boundary layer and velocity on the flow axis in front of the model were recovered. With the local heat transfer simulation theory, the numerical results for a flow over the model were used to establish the correspondence between the parameters of the plasma flow in a high-frequency plasmatron and the conditions of the entry of a blunt-nosed body with a hypersonic velocity into the atmosphere; the altitude, velocity, and the radius of curvature of the body nose with respect to the operating conditions of a high-frequency generator were calculated.
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REFERENCES
Gordeev, A.N., Kolesnikov, A.F., and Yakushin, M.I., SAMPE J, 1992, vol. 28, no. 3, p. 29.
Gordeev, A.N. and Kolesnikov, A.F., in Aktual’nye problemy mekhaniki. Fiziko-khimicheskaya mekhanika zhidkostei i gazov (Actual Problems of Mechanics: Physicochemical Mechanics of Liquids and Gases), Moscow: Nauka, 2010, p. 151.
Zalogin, G.N., Zemlyanskii, B.A., Knot’ko, V.B., Murzinov, I.N., Rumynskii, A.N., and Kuz’min, L.A., Kosmonavt. Raketostroen., 1994, no. 2, p. 22.
Zhestkov, B.E., Uch. Zap. Tsentr. Aerogidrodin. Inst., 2014, vol. 45, no. 5, p. 62.
Bottin, B., Chazot, O., Carbonaro, M., van der Yaegen, V., and Paris, S., in Proc. Int. Conf. on Measurement Techniques for High Enthalpy and Plasma Flows, Belgium, 1999, RTO-EN-8.
Herdrich, G., Auweter-Kurtz, M., Kurtz, H., Laux, T., and Winter, M., J. Thermophys. Heat Transfer, 2002, vol. 16, no. 3, p. 440.
Dougherty, M., Owens, W., Meyers, J., and Fletcher, D., in Proc. 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Orlando, FL, 2011.
Vasil’evskii, S.A. and Kolesnikov, A.F., Fluid Dyn., 2000, vol. 35, no. 5, p. 769.
Vasil’evskii, S.A. and Kolesnikov, A.F., in Entsiklopediya nizkotemperaturnoi plazmy (Encyclopedia of Low-Temperature Plasma), Ser. B, Moscow: Yanus-K, 2008, vol. 7-1, p. 220.
Vasil’evskii, S.A. and Kolesnikov, A.F., in Aktual’nye problemy mekhaniki. Mekhanika zhidkosti, gaza i plazmy (Actual Problems of Mechanics: Fluid, Gas, and Plasma Mechanics), Moscow: Nauka, 2008, p. 95.
Gordeev, A.N., Kolesnikov, A.F., and Sakharov, V.I., High Temp., 2015, vol. 53, no. 2, p. 272.
Kolesnikov, A.F., Gordeev, A.N., and Vasil’evskii, S.A., High Temp., 2016, vol. 54, no. 1, p. 29.
Bashkin, V.A., Egorov, I.V., Zhestkov, B.E., and Shvedchenko, V.V., High Temp., 2008, vol. 46, no. 5, p. 705.
Vlasov, V.I., Kosmonavt. Raketostroen., 2001, no. 23, p. 18.
Vlasov, V.I., Zalogin, G.N., and Kovalev, R.V., Kosmonavt. Raketostroen., 2013, no. 3, p. 116.
Van den Abeele, D., Vasil’evskii, S.A., Kolesnikov, A.F., Degrez, G., and Bottin, B., in Progress in Plasma Processing of Materials, Fauchais, P. and Amouroux, J., Eds., New York: Begell House, 1999, p. 245.
Bykova, N.G., Vasil’evskii, S.A., and Kolesnikov, A.F., High Temp., 2004, vol. 42, no. 1, p. 11.
Surzhikov, S.T., Teplovoe izluchenie gazov i plazmy (Thermal Radiation of Gases and Plasma), Moscow: Mosk. Gos. Tekh. Univ. im. N.E. Baumana, 2004.
Patankar, S., Numerical Heat Transfer and Fluid Flow, New York: Hemisphere, 1980.
Vasil’evskii, S.A., Sokolova, I.A., and Andriatis, A.V., Fiz.-Khim. Kin. Gas. Din., 2005, vol. 3. http:// chemphys.edu.ru/media/published/2005-06-14-001.pdf
Kolesnikov, A.F. and Yakushin, M.I., Mat. Model., 1989, vol. 1, no. 3, p. 44.
Kolesnikov, A.F., Gordeev, A.N., and Vasil’evskii, S.A., Testing materials in the plasma generator VGU-4 and determination of their catalytic activity for conditions simulating heat transfer to the experimental EXPERT apparatus, Preprint of the Inst. Problems in Mechanics, Russian Academy of Sciences, Moscow, 2011, no. 969.
Petukhov, I.V., in Chislennye metody resheniya differentsial’nykh i integral’nykh uravnenii i kvadraturnye formuly (Numerical Methods for Solving Differential and Integral Equations and Quadrature Formulas), Moscow: Nauka, 1964, p. 304.
Kolesnikov, A.F., Fluid Dyn., 1993, vol. 28, no. 1, p. 131.
Kolesnikov, A.F., High Temp., 2014, vol. 52, no. 1, p. 110.
Funding
The work was performed according to the Government Order no. АААА-А17-117021310383-2 with the partial support of the Russian Foundation for Basic Research, project no. 17-01-00054.
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Translated by T. Krasnoshchekova
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Kolesnikov, A.F., Gordeev, A.N., Vasil’evskii, S.A. et al. The Effect of the Geometry of the Discharge Channel in a High-Frequency Plasmatron on Heat Transfer in High-Enthalpy Subsonic Air Jets. High Temp 57, 469–476 (2019). https://doi.org/10.1134/S0018151X19040114
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DOI: https://doi.org/10.1134/S0018151X19040114