NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE

In this paper, the challenge is to increasing of the heat exchanger performance by placing different size balls inside the tubes. the development of previous studies to enhance relatively bad case of heat transfer where the inserting (a large ball and then a small ball) to collide the water molecule...

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Autores principales:	Haider L. Aneed, Dhamyaa S. Khudhur
Formato:	article
Lenguaje:	AR EN
Publicado:	Mustansiriyah University/College of Engineering 2021
Materias:	diameter ratio thermal performance factor ball insert Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/278db839ff334ece8c70fe52da5bf5d0
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spelling	oai:doaj.org-article:278db839ff334ece8c70fe52da5bf5d02021-11-10T10:23:27ZNUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE10.31272/jeasd.25.6.12520-09172520-0925https://doaj.org/article/278db839ff334ece8c70fe52da5bf5d02021-11-01T00:00:00Zhttps://www.iasj.net/iasj/download/5ce4cae409e45e92https://doaj.org/toc/2520-0917https://doaj.org/toc/2520-0925In this paper, the challenge is to increasing of the heat exchanger performance by placing different size balls inside the tubes. the development of previous studies to enhance relatively bad case of heat transfer where the inserting (a large ball and then a small ball) to collide the water molecules in the ball and generate turbulent flow (Reynolds number range from 50,000 to 350,000) and thus increase the thermal performance due to collision of particles with the inner casing of the tube and reduce the stagnation near the wall. The usefulness of small ball, after the big ball, is Reduce of gets wake flow. A simulation was made when changing the diameter ratio of big to small ball (Dr = 3, 4, 5). Also, the distance between the big ball and the small ball was changed (X = 2, 3, 5) mm. It was concluded that the best ball diameter ratio and best Distance is (Dr= D_b/D_sb = 5), (X = 3 mm), respectively. The pressure drop acts as a side effect of enhancement. Therefore, the method of equal pumping was adopted. The average thermal performance factor (TPF=1.178) of tube with insert the balls enhanced by 17.8% at (x=3mm) and (Dr=5) when compared with smooth tube.Haider L. AneedDhamyaa S. KhudhurMustansiriyah University/College of Engineeringarticlediameter ratiothermal performance factorball insertEngineering (General). Civil engineering (General)TA1-2040ARENJournal of Engineering and Sustainable Development, Vol 25, Iss 6, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	AR EN
topic	diameter ratio thermal performance factor ball insert Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	diameter ratio thermal performance factor ball insert Engineering (General). Civil engineering (General) TA1-2040 Haider L. Aneed Dhamyaa S. Khudhur NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
description	In this paper, the challenge is to increasing of the heat exchanger performance by placing different size balls inside the tubes. the development of previous studies to enhance relatively bad case of heat transfer where the inserting (a large ball and then a small ball) to collide the water molecules in the ball and generate turbulent flow (Reynolds number range from 50,000 to 350,000) and thus increase the thermal performance due to collision of particles with the inner casing of the tube and reduce the stagnation near the wall. The usefulness of small ball, after the big ball, is Reduce of gets wake flow. A simulation was made when changing the diameter ratio of big to small ball (Dr = 3, 4, 5). Also, the distance between the big ball and the small ball was changed (X = 2, 3, 5) mm. It was concluded that the best ball diameter ratio and best Distance is (Dr= D_b/D_sb = 5), (X = 3 mm), respectively. The pressure drop acts as a side effect of enhancement. Therefore, the method of equal pumping was adopted. The average thermal performance factor (TPF=1.178) of tube with insert the balls enhanced by 17.8% at (x=3mm) and (Dr=5) when compared with smooth tube.
format	article
author	Haider L. Aneed Dhamyaa S. Khudhur
author_facet	Haider L. Aneed Dhamyaa S. Khudhur
author_sort	Haider L. Aneed
title	NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
title_short	NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
title_full	NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
title_fullStr	NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
title_full_unstemmed	NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE
title_sort	numerical study of heat transfer enhancement by inserting different size balls inside tube
publisher	Mustansiriyah University/College of Engineering
publishDate	2021
url	https://doaj.org/article/278db839ff334ece8c70fe52da5bf5d0
work_keys_str_mv	AT haiderlaneed numericalstudyofheattransferenhancementbyinsertingdifferentsizeballsinsidetube AT dhamyaaskhudhur numericalstudyofheattransferenhancementbyinsertingdifferentsizeballsinsidetube
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NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT BY INSERTING DIFFERENT SIZE BALLS INSIDE TUBE

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