The present work examines the effects of temperature and velocity jump conditions on heat transfer, fluid flow, and entropy generation. As the physical model, the axially symmetrical steady flow of a Newtonian ambient fluid over a single rotating disk is chosen. The related nonlinear governing equations for flow and thermal fields are reduced to ordinary differential equations by applying so-called classical approach, which was first introduced by von Karman. Instead of a numerical method, a recently developed popular semi numerical-analytical technique; differential transform method is employed to solve the reduced governing equations under the assumptions of velocity and thermal jump conditions on the disk surface. The combined effects of the velocity slip and temperature jump on the thermal and flow fields are investigated in great detail for different values of the nondimensional field parameters. In order to evaluate the efficiency of such rotating fluidic system, the entropy generation equation is derived and nondimensionalized. Additionally, special attention has been given to entropy generation, its characteristic and dependency on various parameters, i.e., group parameter, Kn and Re numbers, etc. It is observed that thermal and velocity jump strongly reduce the magnitude of entropy generation throughout the flow domain. As a result, the efficiency of the related physical system increases. A noticeable objective of this study is to give an open form solution of nonlinear field equations. The reduced recurative form of the governing equations presented gives the reader an opportunity to see the solution in open series form.
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e-mail: ozkol@itu.edu.tr
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November 2010
This article was originally published in
Journal of Heat Transfer
Research Papers
Combined Effects of Temperature and Velocity Jump on the Heat Transfer, Fluid Flow, and Entropy Generation Over a Single Rotating Disk
A. Arikoglu,
A. Arikoglu
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
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G. Komurgoz,
G. Komurgoz
Department of Electrical Engineering, Faculty of Electrical and Electronic Engineering,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
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I. Ozkol,
I. Ozkol
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
e-mail: ozkol@itu.edu.tr
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
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A. Y. Gunes
A. Y. Gunes
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
Search for other works by this author on:
A. Arikoglu
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
G. Komurgoz
Department of Electrical Engineering, Faculty of Electrical and Electronic Engineering,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkey
I. Ozkol
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, Turkeye-mail: ozkol@itu.edu.tr
A. Y. Gunes
Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics,
Istanbul Technical University
, Maslak, TR-34469 Istanbul, TurkeyJ. Heat Transfer. Nov 2010, 132(11): 111703 (10 pages)
Published Online: August 13, 2010
Article history
Received:
February 17, 2010
Revised:
June 10, 2010
Online:
August 13, 2010
Published:
August 13, 2010
Citation
Arikoglu, A., Komurgoz, G., Ozkol, I., and Gunes, A. Y. (August 13, 2010). "Combined Effects of Temperature and Velocity Jump on the Heat Transfer, Fluid Flow, and Entropy Generation Over a Single Rotating Disk." ASME. J. Heat Transfer. November 2010; 132(11): 111703. https://doi.org/10.1115/1.4002098
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