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Initiation of Stable Detonation Combustion of Kerosene Vaporsbehind an Oblique Shock Wave in a Rarefied Atmosphereстатья
- Авторы: Tunik Yu V., Gerasimov G.Ya, Levashov V.Yu, Mayorov V.O., Assad M.C.
- Журнал: Russian Journal of Physical Chemistry B
- Том: 16
- Номер: 4
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 699
- Последняя страница: 705
- DOI: 10.1134/S1990793122040327
- Аннотация: A family of axisymmetric Laval nozzles with a central cylindrical part is considered. The nozzlediffuser with relatively small dimensions ensures stable detonation combustion of kerosene vapor behind an inclined shock front that forms before entering the combustion chamber without auxiliary initiating structures and additional energy supply. Modeling is carried out based on the two-dimensional unsteady Euler equations of motion for axisymmetric flows of a multicomponent gas and a simplified kinetic scheme of chemical transformations. The calculations are performed using a modified numerical scheme by S.K. Godunov of the second order of accuracy in spatial variables. It is shown that effective detonation combustion occurs on the impact of the initiating shock front on the wall of the combustion chamber in the immediate vicinity of the corner point of conjugation with the diffuser. The parameters of a number of nozzles are determined, in which the detonation combustion of kerosene vapor provides high power characteristics with an efficiency of more than 40% in atmospheric air at an altitude of about 40 km at a flight Mach number of M0 = 9.
- Добавил в систему: Туник Юрий Владимирович