Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator

Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator

Swirl/vortex fl ow generator is an important form of passive augmentation techniques consist of a variety of tube inserts, geometrically varied fl ow arrangements and duct geometry modifi cations that produce fl ows. Twisted-tape is one of the most important members of this form which used extensi...

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Main Authors: Sami D. Salman, Abdul Amir H. Kadhum, Mohd S. Takriff, Abu Bakar Mohamad
Format: Article
Language:English
Published: Fakulti Kejuruteraan ,UKM,Bangi. 2014
Online Access:http://journalarticle.ukm.my/8527/
http://journalarticle.ukm.my/8527/
http://journalarticle.ukm.my/8527/1/350-481-1-SM.pdf
id ukm-8527
recordtype eprints
spelling ukm-85272016-12-14T06:47:27Z http://journalarticle.ukm.my/8527/ Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator Sami D. Salman, Abdul Amir H. Kadhum, Mohd S. Takriff, Abu Bakar Mohamad, Swirl/vortex fl ow generator is an important form of passive augmentation techniques consist of a variety of tube inserts, geometrically varied fl ow arrangements and duct geometry modifi cations that produce fl ows. Twisted-tape is one of the most important members of this form which used extensively in different type heat exchangers. This paper presents a research on heat transfer enhancement and friction factor characteristics in a circular tube using CFD simulation. Plain twisted tape inserts with twist ratios (y = 2.93, 3.91) and slant baffl ed twisted tape inserts with baffl e angle 30° and twist ratio (y = 2.93) have been used for the simulation. The results obtained by simulation matched with the literature correlations for plain tube with the discrepancy of less than ±8% for Nusselt number and ±6.25% for friction factor. The results have also revealed that the heat transfer in term of the Nusselt number enhanced with increases of Reynolds number, decreases of twist ratio. Among the various twist ratios, the slant baffl ed twisted tape with twist ratio of y = 2.93 has offered a maximum heat transfer enhancement with signifi cant friction factor. Fakulti Kejuruteraan ,UKM,Bangi. 2014 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/8527/1/350-481-1-SM.pdf Sami D. Salman, and Abdul Amir H. Kadhum, and Mohd S. Takriff, and Abu Bakar Mohamad, (2014) Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator. Jurnal Kejuruteraan, 26 . pp. 63-67. ISSN 0128-0198 http://www.ukm.my/jkukm/index.php/jkukm/issue/view/36
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
description Swirl/vortex fl ow generator is an important form of passive augmentation techniques consist of a variety of tube inserts, geometrically varied fl ow arrangements and duct geometry modifi cations that produce fl ows. Twisted-tape is one of the most important members of this form which used extensively in different type heat exchangers. This paper presents a research on heat transfer enhancement and friction factor characteristics in a circular tube using CFD simulation. Plain twisted tape inserts with twist ratios (y = 2.93, 3.91) and slant baffl ed twisted tape inserts with baffl e angle 30° and twist ratio (y = 2.93) have been used for the simulation. The results obtained by simulation matched with the literature correlations for plain tube with the discrepancy of less than ±8% for Nusselt number and ±6.25% for friction factor. The results have also revealed that the heat transfer in term of the Nusselt number enhanced with increases of Reynolds number, decreases of twist ratio. Among the various twist ratios, the slant baffl ed twisted tape with twist ratio of y = 2.93 has offered a maximum heat transfer enhancement with signifi cant friction factor.
format Article
author Sami D. Salman,
Abdul Amir H. Kadhum,
Mohd S. Takriff,
Abu Bakar Mohamad,
spellingShingle Sami D. Salman,
Abdul Amir H. Kadhum,
Mohd S. Takriff,
Abu Bakar Mohamad,
Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
author_facet Sami D. Salman,
Abdul Amir H. Kadhum,
Mohd S. Takriff,
Abu Bakar Mohamad,
author_sort Sami D. Salman,
title Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
title_short Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
title_full Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
title_fullStr Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
title_full_unstemmed Heat transfer enhancement of laminar flow in a circular tube using Swirl/vortex generator
title_sort heat transfer enhancement of laminar flow in a circular tube using swirl/vortex generator
publisher Fakulti Kejuruteraan ,UKM,Bangi.
publishDate 2014
url http://journalarticle.ukm.my/8527/
http://journalarticle.ukm.my/8527/
http://journalarticle.ukm.my/8527/1/350-481-1-SM.pdf
first_indexed 2023-09-18T19:52:34Z
last_indexed 2023-09-18T19:52:34Z
_version_ 1777406316858310656

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