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Experimental and numerical investigation of convective heat transfer in a circular tube with internal square ribs
Joint Authors
al-Tai, Arkan
Jurmut, Hasasn Ali
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 22, Issue 4 (31 Dec. 2014), pp.917-926, 10 p.
Publisher
Publication Date
2014-12-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Topics
Abstract AR
تمت في هذا البحث دراسة عملية و نظرية لانتقال الحرارة خلال أنبوب دائري طوله (500 ملم) باستخدام أضلاع مربعة طول الضلع (80 ملم) داخل الأنبوب بعدد (٧) و (٦) في أعلى و أسفل الأنبوب على التوالي.
المائع المستخدم (الهواء) أخذ رقم رينولد ٣١١٧٠ و باستخدام درجات حرارة مختلفة على سطح الأنبوب و قد أظهرت النتائج اقتراب جيد بين الجانب النظري و العملي بمقدار 4.4 % و أن كمية الحرارة المنتقلة 213 % مقارنة بالأنبوب بدون أضلاع.
و أن استخدام الأضلاع يحسن من انتقال الحرارة و قد استخدم برنامج فلونت 14.5 لكافة الحسابات باستخدام نموذج -K.
Abstract EN
This work presents an experimental and numerical investigation of heat transfer characteristics of horizontal circular pipe500mm long using internal square ribs of 80mm width, 80mm height, n = 7 in upper surface and 80mmwidth, 80mm height, n = 6 in lower surface of pipe, p = 100mm, with air as the working fluid.
Reynolds number 31170 was taken.
The steel pipe (ASM4120) was subjected to different constant surface temperatures.
The experimental data obtained were compared with plain (with out ribs) case..
Based on the same coolant flow, the pipe with internal square ribs was found to possess the highest performance factors for turbulent flow.
The results show a good agreement between theoretical and experimental by factor 4.4 %.
The heat transfer rates obtained from pipe upper surface and lower surface is 213 % over the smooth channel.
For a given Reynolds number.
The use of internal square ribs improved the heat transfer in circular pipe.
All studies where carried out using workbench programFlUENT14.5 by using K- model.
American Psychological Association (APA)
al-Tai, Arkan& Jurmut, Hasasn Ali. 2014. Experimental and numerical investigation of convective heat transfer in a circular tube with internal square ribs. Journal of University of Babylon for Engineering Sciences،Vol. 22, no. 4, pp.917-926.
https://search.emarefa.net/detail/BIM-441608
Modern Language Association (MLA)
al-Tai, Arkan& Jurmut, Hasasn Ali. Experimental and numerical investigation of convective heat transfer in a circular tube with internal square ribs. Journal of University of Babylon for Engineering Sciences Vol. 22, no. 4 (2014), pp.917-926.
https://search.emarefa.net/detail/BIM-441608
American Medical Association (AMA)
al-Tai, Arkan& Jurmut, Hasasn Ali. Experimental and numerical investigation of convective heat transfer in a circular tube with internal square ribs. Journal of University of Babylon for Engineering Sciences. 2014. Vol. 22, no. 4, pp.917-926.
https://search.emarefa.net/detail/BIM-441608
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 926
Record ID
BIM-441608