Turbulent heat transfer and nanofluid flow in a triangular duct with vortex generators

Hamdi E. Ahmed, Mohd Zamri Yusoff, M. N.A. Hawlader, M. I. Ahmed, B. H. Salman, A. Sh Kerbeet

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Triangular conduits provide low pressure drop and low heat transfer coefficient compared to circular and other shapes of non-circular passages. The advantage of their low pressure drop motivated this research to increase the heat transfer rate by using two passive methods; vortex generators and nanofluids. Turbulent flow-forced convective heat transfer of Al 2 O 3 /water and CuO/water nanofluids in an equilateral triangular passage with a delta-winglet pair of vortex generator is numerically studied in three-dimensions. A two-phase mixture model is utilized to simulate the fluid flow considering variable properties for nanofluids whereas those of solid nanoparticles are constant. The study is carried out to examine the effect of the different types of nanofluids, different volume fractions with a wide range of Reynolds numbers on the heat transfer and pressure drop penalty. A comparison between the nanofluid and the base fluid heat transfer is performed in this research. The Al 2 O 3 /water nanofluid shows great enhancement in heat transfer with the maximum overall performance of 45.7% at 3 vol.% and Re = 16,000 compared to the base fluid. High heat transfer and low pressure drop are observed by using nanofluid and VG simultaneously.

Original languageEnglish
Pages (from-to)495-504
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume105
DOIs
Publication statusPublished - 01 Feb 2017

Fingerprint

turbulent heat transfer
vortex generators
Gas generators
ducts
Ducts
pressure drop
Vortex flow
heat transfer
Heat transfer
Pressure drop
low pressure
winglets
Water
water
fluids
convective heat transfer
heat transfer coefficients
penalties
Fluids
turbulent flow

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Ahmed, Hamdi E. ; Yusoff, Mohd Zamri ; Hawlader, M. N.A. ; Ahmed, M. I. ; Salman, B. H. ; Kerbeet, A. Sh. / Turbulent heat transfer and nanofluid flow in a triangular duct with vortex generators. In: International Journal of Heat and Mass Transfer. 2017 ; Vol. 105. pp. 495-504.
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Turbulent heat transfer and nanofluid flow in a triangular duct with vortex generators. / Ahmed, Hamdi E.; Yusoff, Mohd Zamri; Hawlader, M. N.A.; Ahmed, M. I.; Salman, B. H.; Kerbeet, A. Sh.

In: International Journal of Heat and Mass Transfer, Vol. 105, 01.02.2017, p. 495-504.

Research output: Contribution to journalArticle

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