کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1714234 1519933 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-reacting flow visualization of supersonic combustor based on cavity and cavity-strut flameholder
ترجمه فارسی عنوان
تجدید جریان غیر واکنشی از آتش سوزی بادی بر اساس حفره و حفره
کلمات کلیدی
آتش سوزی فوق العاده شعلهور کننده حفره، ستون مرکزی، میدان جریان غیر واکنشی، تبادل جرم بین جریان اصلی و مایع حفره،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
Nano-particle planer laser scattering and particle image velocimetry technology are employed to observe the flow field of scramjet combustors based on cavity and cavity-strut flameholder. Density field and velocity distribution inside combustors are obtained. Mainstream fluid enters into cavity nearby side wall in experimental observation because side wall shock waves interact with bottom wall boundary layer. Cavity fluid is entrained into mainstream in the middle of combustor meanwhile. Flow past cavity displays obvious three dimensional characteristics in both combustors. But cavity-strut combustor displays asymmetrical flow field because of strut configuration. Mass exchange between mainstream and cavity fluid is evaluated by statistic mass flow rate into cavity. Mass flow rate near side wall is raised to 6.62 times of the value in the middle of cavity combustor while it is 5.1 times in cavity-strut combustor. Further study is needed to injection strategies and realistic flow characteristics on condition of combustion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 121, April–May 2016, Pages 282-291
نویسندگان
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