کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662964 1458154 2007 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of channel-height on heat transfer in rectangular channels with skewed ribs at different bleed conditions
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Influence of channel-height on heat transfer in rectangular channels with skewed ribs at different bleed conditions
چکیده انگلیسی

An infrared imaging system is used to measure detailed distributions of local heat transfer coefficient from rectangular channels with two opposite wide walls roughened by 45° staggered ribs of twenty test cases. Nusselt number (Nu) contours over the ribbed surfaces are presented for five sets of channels with an identical rib-floor configuration, but different channel-heights where the complex Nu distributions without bleed and then with bleeds from the scanned rib-floor or from the ribbed wall opposite to the scanned rib-floor or from the smooth sidewall are analyzed to examine the synergetic effects of variable channel-heights and different bleed conditions on heat transfer. Spatially averaged heat transfer results for the entire set of test channels are generated with the thermal performance factors compared to establish the heat transfer correlations with applications to the design of coolant channels in a gas turbine blade.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 23–24, November 2007, Pages 4581–4599
نویسندگان
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