Convective heat transfer and pressure drop in V-corrugated channel with different phase shifts

M. Sakr

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    New energy system development and energy conservation require high performance heat exchanger, so the researchers are seeking to find new methods to enhance heat transfer mechanism in heat exchangers. The objectives of this study are investigating heat transfer performance and flow development in V-corrugated channels, numerical simulations were carried out for uniform wall heat flux equal 290 W/m2 using air as a working fluid, Reynolds number varies from 500 to 2,000, phase shifts, 0° <Ø <180°, and channel heights (S = 12.5, 15.0, 17.5 and 20 mm). Governing equations of flow and energy were solved numerically by using finite volume method. The numerical results indicated that, wavy (V-corrugated) channels have a significant impact on heat transfer enhancement with increase in pressure drop though channel due to breaking and destabilizing in the thermal boundary layer are occurred as fluid flowing through the corrugated surfaces and the effect of corrugated phase shift on the heat transfer and fluid flow is more significant in narrow channel, the goodness factor (j/f) was increased with increasing channel phase shift, the best performance was noticed on phase shift, Ø = 180° and channel height, S = 12.5 mm.
    Original languageEnglish
    Pages (from-to)129-141
    JournalHeat and Mass Transfer
    Volume51
    Issue number1
    DOIs
    Publication statusPublished - 2014

    Bibliographical note

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    Keywords

    • Air
    • Boundary layers
    • Channel flow
    • Drops
    • Finite volume method
    • Flow of fluids
    • Heat convection
    • Heat flux
    • Heat transfer
    • Phase shift
    • Phase shifters
    • Pressure drop
    • Reynolds number
    • Convective heat transfer
    • Heat transfer and fluid flow
    • Heat Transfer enhancement
    • Heat transfer mechanism
    • Heat transfer performance
    • Increase in pressure
    • Thermal boundary layer
    • Uniform wall heat flux

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