Publication:
Deflagration-to-detonation Transition in Stratified Oxygen–Liquid Fuel Film Systems

Дата
2022
Авторы
Shamshin, I. O.
Frolov, S. M.
Aksenov, V. S.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 2021 Taylor and Francis Group, LLC.Deflagration-to-detonation transition (DDT) in gas (oxygen)–liquid n-heptane film and gas (oxygen)–liquid n-decane film systems is registered experimentally using a fused or exploding wire as a weak ignition source that generates a primary shock wave with a Mach number ranging from 1.02 to 1.6. In a straight smooth-walled channel of rectangular cross section 54 × 24 mm, 3 and 6 m long with one open end, the DDT is obtained at distances 900 to 4000 mm from the ignition source 3 to 1700 ms after ignition. The DDT is obtained for n-heptane and n-decane films 0.2 to 0.7 mm thick, which corresponds to the overall fuel-to-oxygen equivalence ratios of 15 to 40. The registered detonation velocities range from 1400 to 2000 m/s. In several experiments, a high-velocity quasi-stationary deflagration front propagating at an average velocity of 700–1100 m/s is recorded. The structure of this front includes the leading shock wave followed by the reaction zone separated from each other by a time delay of 90 to 190 μs. The results obtained are important for explosion safety and for better understanding of the operation process in the continuous-detonation and pulse-detonation combustors of advanced rocket and air-breathing engines with the supply of liquid fuel in the form of a wall film.
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Цитирование
Shamshin, I. O. Deflagration-to-detonation Transition in Stratified Oxygen–Liquid Fuel Film Systems / Shamshin, I.O., Frolov, S.M., Aksenov, V.S. // Combustion Science and Technology. - 2022. - 10.1080/00102202.2021.1929196
URI
https://www.doi.org/10.1080/00102202.2021.1929196
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85107346089&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000656337000001
 https://openrepository.mephi.ru/handle/123456789/28563
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