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

Shiva Kumar, P. Dinesha, K. R.N. Sai Krishna

Research output: Contribution to journalArticle

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 the outer side of an inner pipe at a regular pitch. Experimental studies were undertaken for different air flow rates in a turbulent regime whose Reynolds number range between 2500 and 10000. Heat transfer 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 alternatively changed orientation outperformed others by exhibiting highest Nu and reduced friction factor.

Original languageEnglish
Pages (from-to)245-262
Number of pages18
JournalJournal of Turbulence
Volume20
Issue number4
DOIs
Publication statusPublished - 03-04-2019

Fingerprint

friction factor
heat exchangers
turbulent flow
Turbulent flow
numerical analysis
Heat exchangers
nu factor
Numerical analysis
Pipe
Friction
fins
air flow
Reynolds number
flow velocity
heat transfer
Flow rate
Heat transfer
Air

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physics and Astronomy(all)

Cite this

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Experimental and numerical analysis of cylindrical turbulators in a double pipe heat exchanger under turbulent flow conditions. / Kumar, Shiva; Dinesha, P.; Sai Krishna, K. R.N.

In: Journal of Turbulence, Vol. 20, No. 4, 03.04.2019, p. 245-262.

Research output: Contribution to journalArticle

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