Experimental development of a Nusselt correlation for forced reciprocating oscillated vertical annular glycerol flow through a porous domain

Sayar, Ersin

doi:10.1007/s00231-017-1987-6

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…Consequently, all passive or active heat-transfer applications that improve natural or forced convection can also improve mixed-convection heat transfer. Modifications such as the use of fins to increase surface area, the addition of various turbulators into the flow, electric-or magnetic-field applications, the addition of nano-sized particles to the basic fluid, the use of basic fluid under supercritical conditions, the use of vibrating fluid, or the use of continuous moving plates improve heat transfer with natural, forced, or mixed convection [4][5][6][7][8][9]. The velocity and temperature distributions on moving surfaces can affect the heat-transfer rate on the surface.…”

Section: Introductionmentioning

confidence: 99%

Mixed convection heat transfer from a vertical flat plate subjected to periodic oscillations

Akçay

Akdag

2021

Journal of Thermal Engineering

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In this study, effects on mixed convection heat transfer of oscillation parameters on a vertical flat plate surface subjected to constant heat flux are experimentally and numerically investigated. The experimental setup includes a hanger-pulley system installed above a transparent enclosure contain a moving experimental model, flywheel-motor assembly generating the oscillating movement of the experimental model, power supply, and datalogger. The experimental model comprises two copper plates with attached thermocouples and Kapton heaters placed between the plates. In the study, heat flux applied to surface of the plates (q″), the Womersley number (Wo) and dimensionless oscillation amplitude (A o ) are varied. The effects of these parameters on the heat transfer performance are analyzed. This study is numerically solved using a control-volume based Computational Fluid Dynamics solver based on experimental data. The numerical results are compared with the experimental results and open literature. Instantaneous velocity and temperature profiles on the plate are obtained to explain the heat transfer mechanism. According to the numerical and experimental results, heat transfer performance is significantly a ffected by os cillation pa rameters an d he at flu x app lied to the plate surface. The m ixed c onvection h eat t ransfer i ncreases w ith t he i ncrease i n o scillation parameters for all tested heat fluxes. The obtained results are presented as a function of dimensionless numbers.

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