Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102512
Title: Unsteady forced convection heat transfer of a stationary and rotating sphere: Experimental Investigation
Authors: Abed, A. H.
Shcheklein, S. E.
Issue Date: 2020
Publisher: IOP Publishing Ltd
Citation: Abed A. H. Unsteady forced convection heat transfer of a stationary and rotating sphere: Experimental Investigation / A. H. Abed, S. E. Shcheklein. — DOI 10.1088/1742-6596/1677/1/012003 // Journal of Physics: Conference Series. — 2020. — Vol. 1677. — Iss. 1. — 012003.
Abstract: Unsteady forced convection heat transfer of a stationary and rotating sphere in an open-loop air system was experimentally investigated with an aim to evaluate the influence of sphere rotation rate on the heat transfer enhancement. A special-purpose conical diffuser having a circular cross-section with constant divergence angle has been carefully designed and adopted as a passive rotating technique. The effect of inlet Re number, non-dimensional rotational speed, and initial surface temperature on heat transfer enhancement are examined. It is observed from the comparison made that there are significant differences between the stationary and rotating sphere of heat transfer behavior. The experimental results of heat transfer behavior in terms of heat flux q and Nusselt number Nu, respectively, expose that q decreases with increase of non-dimensional rotational speed, while Nu increases with the increase of non-dimensional rotational speed around 600%. © Published under licence by IOP Publishing Ltd.
Keywords: FORCED CONVECTION
HEAT FLUX
HEAT TRANSFER COEFFICIENTS
CIRCULAR CROSS-SECTIONS
DIVERGENCE ANGLE
EXPERIMENTAL INVESTIGATIONS
HEAT TRANSFER BEHAVIOR
HEAT TRANSFER ENHANCEMENT
ROTATING TECHNIQUE
SURFACE TEMPERATURES
UNSTEADY FORCED CONVECTION
SPHERES
URI: http://hdl.handle.net/10995/102512
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85097338168
PURE ID: 20214188
9331c0c1-5981-4d12-aada-b267d581afa6
ISSN: 17426588
DOI: 10.1088/1742-6596/1677/1/012003
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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