Abstract
This paper describes the numerical simulation of combustion with the manifestation of the Vilyunov–Dvoryashin effect that comes down to reduction of the burning rate in the case of blowing of gaseous combustion products past the propellant gasification surface. The cases of endothermic and exothermic reactions of gasification of the solid propellant are considered. The Vilyunov–Dvoryashin effect can terminate combustion even before the erosion coefficient reaches a minimum value of 0.61. Self-oscillating combustion may also occur. The simulation of propellant combustion similar in its properties to the propellant N shows qualitative agreement between the theoretical and experimental results. However, it also reveals the need for more accurate data with regard to performance conditions and experimental results. The existing models of solid-propellant combustion require significant updates as well.
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Original Russian Text © K.O. Sabdenov, M. Erzada.
Published in Fizika Goreniya i Vzryva, Vol. 52, No. 2, pp. 76–87, March–April, 2016.
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Sabdenov, K.O., Erzada, M. Negative erosion effect and the emergence of unstable combustion. 2. numerical simulation. Combust Explos Shock Waves 52, 193–202 (2016). https://doi.org/10.1134/S001050821602009X
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DOI: https://doi.org/10.1134/S001050821602009X