Modeling of the non-uniform combustion in a scramjet engine

التفاصيل البيبلوغرافية
العنوان: Modeling of the non-uniform combustion in a scramjet engine
المؤلفون: Yao Yizhi, Zun Cai, Gu Rui, Peibo Li, Mingbo Sun
المصدر: International Journal of Hydrogen Energy. 46:26607-26615
بيانات النشر: Elsevier BV, 2021.
سنة النشر: 2021
مصطلحات موضوعية: Materials science, Shock (fluid dynamics), Renewable Energy, Sustainability and the Environment, Isolator, Energy Engineering and Power Technology, Thrust, 02 engineering and technology, Mechanics, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Combustion, 01 natural sciences, 0104 chemical sciences, symbols.namesake, Fuel Technology, Mach number, Thermal, Combustor, symbols, Scramjet, 0210 nano-technology
الوصف: Due to the high-speed of the air stream, the scramjet combustion is neither uniform nor complete. An empirical fuel distribution model is developed to describe non-uniform combustion for scramjet engines. The combustor is subdivided into different regions by radius with different local equivalence ratios. The conservation equations of the regions for the combustion and exhaust expansion are computed independently. The results indicate that scramjet thrust is more related to the fuel equivalence ratio and combustion efficiency. If the combustion efficiency is 100% and the fuel equivalence ratio is constant, there is no obvious effect of different fuel distribution to the engine except for the exhaust parameter distribution. It is also revealed that the sum of isolator shock loss and combustor Rayleigh loss is nearly constant under the same isolate cross-sectional area. Lower isolator inlet Mach is benefit to the thrust performance and the best thrust performance is at the thermal choking boundary. When the isolator inlet Mach increases, the thrust decreases.
تدمد: 0360-3199
DOI: 10.1016/j.ijhydene.2021.05.127
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::d81f9dc276190b3d90638eb2191ed650
https://doi.org/10.1016/j.ijhydene.2021.05.127
Rights: CLOSED
رقم الانضمام: edsair.doi...........d81f9dc276190b3d90638eb2191ed650
قاعدة البيانات: OpenAIRE
الوصف
تدمد:03603199
DOI:10.1016/j.ijhydene.2021.05.127