Experimental and numerical analysis of cylindrical turbulators in a double pipe heat exchanger under turbulent flow conditions

Kumar, Shiva and Dinesha, P and Sai, Krishna K R N (2019) Experimental and numerical analysis of cylindrical turbulators in a double pipe heat exchanger under turbulent flow conditions. Journal of Turbulence, 20 (4). pp. 245-262. ISSN 1468-5248

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Abstract

In the present work, the use of cylindrical turbulators in a double pipe heat exchanger has been investigated. Cylindrical fin type of turbulators has been placed circumferentially separated by 90° on theoutersideofaninnerpipeataregularpitch.Experimentalstudieswereundertakenfordifferentairflowratesinaturbulentregime whoseReynoldsnumberrangebetween2500and10000.Heattransfer characteristics like Nu and friction factor have been experimentally determined. Parametric studies were conducted by changing the pitch and also the orientation of the turbulators. Nu and friction factor were found to increase as the pitch is reduced. A model with alternativelychangedorientationoutperformedothersbyexhibiting highestNuandreducedfrictionfactor

Item Type: Article
Uncontrolled Keywords: double pipe heat exchanger; heat transfer coefficient; numerical modelling; turbulent flow
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 05 Jul 2019 05:46
Last Modified: 05 Jul 2019 05:46
URI: http://eprints.manipal.edu/id/eprint/154130

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