کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5476096 | 1521428 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical investigation on flame blow-off limit of a novel microscale Swiss-roll combustor with a bluff-body
ترجمه فارسی عنوان
بررسی عددی در حد شعله ای که از یک ریز میکروسکوپ مجزا سوپاپ توربوشارژر با یک بدنه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
A micro Swiss-roll combustor with a bluff-body was proposed for the first time. It is demonstrated that this improved design can greatly extend flame blow-off limit by reducing the flame stretch effect. The flame stabilization ability of this new combustor made of quartz, stainless steel (SS) and silicon carbide (SiC) was numerically investigated using a three dimensional, steady state, k-epsilon turbulence model. The results show that at an equivalence ratio of 0.5, the blow-off limits of quartz combustor, SS combustor and SiC combustor are 40Â m/s, 50Â m/s and 35Â m/s, respectively. Comprehensive analyses were conducted under an inlet velocity of 20Â m/s. It was revealled that the heat loss rates for quartz, SS and SiC combustors were 153Â W, 108Â W and 185Â W, respectively. The SS combustor has the best heat-recirculation effect, followed by quartz combustor and SiC combustor. The lengths of recirculation zones are 4.35Â mm, 3.4Â mm and 3.37Â mm for SiC combustor, quartz combustor and SS combustor, respectively. In summary, the heat loss rate is the chief factor responsible for the flame blow-off limit of this novel Swiss-roll combustor. It acts together with the heat-recirculation effect and flow-recirculation effect to determine the flame blow-off limit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 123, 15 March 2017, Pages 252-259
Journal: Energy - Volume 123, 15 March 2017, Pages 252-259
نویسندگان
Aiwu Fan, He Zhang, Jianlong Wan,