کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
658445 | 1458084 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Jet impingement heat transfer on target surfaces with longitudinal and transverse grooves
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work reports detailed impingement heat transfer measurements on grooved surfaces using transient liquid crystal method. These grooves are machined on the target surfaces with either parallel or orthogonal to the exit flow direction, and are aligned either with the jet holes (inline pattern) or between the jet holes (staggered pattern). The jet-to-target plate spacing (Z/d) is 3 and the average jet Reynolds numbers are from 2500 to 7700. Results show that heat transfer is enhanced near grooves. However, the grooves underneath the jet holes hinder the impingement flow and the jet impingement heat transfer is reduced. Although local heat transfer shows distinct distributions, there is no significant difference in overall-averaged Nusselt numbers on the grooved surfaces and the highest heat transfer enhancement by grooved surfaces is 15%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 58, Issues 1â2, March 2013, Pages 292-299
Journal: International Journal of Heat and Mass Transfer - Volume 58, Issues 1â2, March 2013, Pages 292-299
نویسندگان
Yao-Hsien Liu, Siao-Jhe Song, Yuan-Hsiang Lo,