کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5472244 | 1519915 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of cone-struts and cavity flameholders in a kerosene-fueled round scramjet combustor
ترجمه فارسی عنوان
بررسی تجربی مخروطی های مخروطی و فلاشینگ حفره در یک سوخت فشرده دور موتور
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کلمات کلیدی
مشعل صاف هوا نفت کوره مخروطی ها حفره، ثبات شعله شماره دیمکورر،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
چکیده انگلیسی
Experimental investigations of liquid kerosene ignition and flameholding in a round supersonic combustor are presented. Three kinds of flameholders, a cone-struts structure, a cavity and the combination of the both, are studied for the kerosene ignition and flameholding. Results show that ignition and flameholding cannot be achieved by using the sole cone-struts flameholder, although flames are observed at the combustor outlet. The ignition and flameholding are achieved in a narrow range of equivalence ratios by using the cavity flameholder. This range is widened by employing the combination of the cone-struts and the cavity flameholders. It is observed that the back pressure disrupts the isolator entrance flow slightly by using the larger cone-struts (CRÂ =Â 0.261). However, it does not happen when the smaller cone-struts (CRÂ =Â 0.221) is employed. Then a characteristic air mass flow rate in the round combustor is redefined to calculate a modified Damkohler number that correlates the nonpremixed flame stability limits. The correlations are in good agreements with the experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 139, October 2017, Pages 24-33
Journal: Acta Astronautica - Volume 139, October 2017, Pages 24-33
نویسندگان
Dongqing Zhang, Wenyan Song,