کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
657084 | 1458054 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat/mass transfer over the plane tip equipped with a full coverage winglet in a turbine cascade: Part 1 - Winglet bottom surface data
ترجمه فارسی عنوان
انتقال گرما / جرم بیش از نوک هواپیما مجهز به یک بادگیر کامل در یک آبشار توربین: قسمت 1 - داده های سطح وینگلت
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The effects of h/s (tip gap height-to-span ratio) on heat/mass transfer on the bottom surface of a full coverage (FC) winglet, which is installed on a plane (flat) tip, have been investigated by employing the naphthalene sublimation technique along with oil film flow visualizations. In this study, the tip gap is widely changed to be h/s = 0.68%, 1.02%, 1.36%, 1.70% and 2.04% for a winglet width-to-pitch ratio of w/p = 10.55%. From the present measurements, several high heat/mass transfer rate regions are identified on the winglet bottom surface, and various flow phenomena in these regions are discussed in detail. For h/s = 0.68%, heat/mass transfer rate is relatively high even outside the high heat/mass transfer regions. On the contrary, for h/s = 2.04%, there exist relatively low heat/mass transfer rate outside the high heat/mass transfer regions and in particular, very low heat/mass transfer rate is observed on the downstream half of the pressure-side winglet bottom surface. As h/s increases, heat/mass transfer rate averaged on the winglet bottom surface decreases consistently in almost linear proportion to h/s.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 88, September 2015, Pages 965-973
Journal: International Journal of Heat and Mass Transfer - Volume 88, September 2015, Pages 965-973
نویسندگان
Dong Bum Kang, Sang Woo Lee,