کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1270147 1497470 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Large-scale hydrogen–air continuous detonation combustor
ترجمه فارسی عنوان
هیدروژن در مقیاس بزرگ، آتش سوزی انفجاری مستمر هوا
کلمات کلیدی
آتش سوزی انفجاری مداوم، مخلوط هیدروژن و هوا، عملکرد عملیاتی، نیروی ویژه بر اساس سوخت
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


• We conduct experiments in a large-scale continuous-detonation combustor operating on hydrogen–air mixture.
• We vary a size of air-inlet slit to observe changes in operation process and propulsion performance.
• Widening of slit from 2 to 15 mm leads to decrease in a number of rotating detonation waves and to detonation failure.
• Maximum fuel-based specific impulse obtained in experiments is 3000 s.

A large-scale continuous detonation combustor (CDC) has been designed, fabricated and tested to study the effect of different design elements on the operation process and CDC propulsion performance. It has been shown experimentally that widening of the air-inlet slit in the annular combustion chamber from 2 to 15 mm leads to a decrease in the number of detonation waves (DWs) simultaneously circulating in the combustor from four to one and, finally, to transition to the operation mode with intermittent (pulse) longitudinal reaction waves resembling pulse detonations. The number of DWs and the thrust produced by the CDC can be increased by installing a shaped obstacle at the CDC exit nozzle providing the blockage of the combustor cross section. The maximum net thrust produced by the CDC attained 6 kN at the total mass flow rate of fuel components of 7.5 kg/s, whereas the maximum fuel-based specific impulse attained ∼3000 s.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 3, 21 January 2015, Pages 1616–1623
نویسندگان
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