کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7196489 | 1468345 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of inclined ribs on heat transfer coefficient in stationary square channel
ترجمه فارسی عنوان
اثر شیب های شیبدار بر روی ضریب انتقال حرارت در کانال مربعی ثابت
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کلمات کلیدی
دمبرگ، ضریب انتقال حرارت، کریستال مایع حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
The main objective of this research is to study the effect of rib arrangement on the distributions of the local heat transfer coefficient in a stationary channel. In this study, the ribs with square cross section were used to place on two side walls for study. The rib height-to-hydraulic diameter ratio (e/Dh) and the rib pitch-to-height (p/e) ratio were fixed at 0.133 and 10, respectively. Three different types of rib arrangement for inclined ribs, V-shaped ribs and inverted V-shaped ribs were investigated. The rib angle of attack (α) was varied from 30° to 90° for inclined ribs and 45° and 60° for both V-shaped and inverted V-shaped ribs, and compared at constant Reynolds number Re =30000. Thermal Liquid Crystal sheet was applied for evaluating the heat transfer distributions. The results showed that the average Nusselt number on surface with rib inclined angle at 60°, 45°, and 60° V-shaped ribs was improved up to about 20%, 25% and 30% higher than case of angle 90° and the rib inclined angle at 60° V-shaped ribs provided the highest Nusselt number covering largest area when compared to the other cases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Mechanics Letters - Volume 7, Issue 6, November 2017, Pages 344-350
Journal: Theoretical and Applied Mechanics Letters - Volume 7, Issue 6, November 2017, Pages 344-350
نویسندگان
Natthaporn Kaewchoothong, Kittinan Maliwan, Kenichiro Takeishi, Chayut Nuntadusit,