Publication de 8 numéros par an
ISSN Imprimer: 1065-5131
ISSN En ligne: 1563-5074
Indexed in
Heat Transfer Enhancement in Pulsating Flows through Parallel Bluff Plates
RÉSUMÉ
In this study, an unsteady two-dimensional flow through parallel isoflux plates is numerically investigated. The effects of the frequency and amplitude variations of the pulsating flow on the flow field and convective heat transfer at a Reynolds number of 1000 are studied. In order to solve the Navier−Stokes and energy equations, the finite volume approach with a staggered grid is employed. Diffusion and convection terms in the momentum and energy equations are discretized using the central-difference scheme and the semi-fractional step method (revised step method of Kim and Moin [1985]) is used to solve the Navier−Stokes equations. The results indicate that the reattachment length increases by inserting a second plate parallel to the flow and the mean pressure coefficient increases due to the impact of this plate. Pulsating flow enhances the heat transfer from the parallel plate by reducing the reattachment length over the surface of the plates. The small vortex cores, created over the plate surfaces, merge together and produce a large vortex core at a high amplitude and frequency which decreases the convective heat transfer from the plates.
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Afrouzi H. Hassanzadeh, Sedighi K., Farhadi M., Moshfegh A., Lattice Boltzmann analysis of micro-particles transport in pulsating obstructed channel flow, Computers & Mathematics with Applications, 70, 5, 2015. Crossref
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Islam Shariful, Mahmud Shohel, Biglarbegian Mohammad, Tasnim Syeda Humaira, Effect of magnetic field on the Nusselt number of a multi-plate thermoacoustic system, International Journal of Thermal Sciences, 108, 2016. Crossref