کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7709793 1497334 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experiments on flame stabilization in a scramjet combustor with a rear-wall-expansion cavity
ترجمه فارسی عنوان
آزمایشات در تثبیت شعله در یک آتش سوزی اسکرابر با حفره عقب دیوار گسترش
کلمات کلیدی
حفره پشت دیوار، تثبیت کننده شعله، طرح تزریق سوخت، تزریق سوخت مخزن،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
The current study investigated the characteristics of the flame stabilization in a hydrogen fueled scramjet combustor with a rear-wall-expansion cavity at the inflow condition of Mach 2.92 with stagnation pressure 2.6 MPa and stagnation temperature 1530 K. Effects of four representative fuel injection schemes on the combustion process had been compared. The experimental results show that the injection schemes with two parallel injectors (30 mm upstream the cavity) and with single injector (10 mm upstream the cavity) achieve slightly heat release increment when increasing the equivalence ratio. While the injection schemes with two cascaded injectors (30 mm and 10 mm upstream the cavity) and with two parallel injectors (10 mm upstream the cavity) would perform obviously more intense and stable combustion in the combustor at the same equivalence ratio. For the injection scheme with two cascaded injectors (30 mm and 10 mm upstream the cavity), although there would be less intense combustion above the cavity, there exist wider heat release zones downstream the cavity compared to the injection scheme with two parallel injectors (10 mm upstream the cavity). It is also demonstrated that the injection scheme with two cascaded injectors (30 mm and 10 mm upstream the cavity) is a favorable fuel injection scheme for the rear-wall-expansion cavity during the flame stabilization process, and a robust and stable flame would be achieved in the combustor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 43, 26 October 2017, Pages 26752-26761
نویسندگان
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