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Journal of Enhanced Heat Transfer
インパクトファクター: 0.562 5年インパクトファクター: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN 印刷: 1065-5131
ISSN オンライン: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v18.i2.70
pages 167-176

COMPUTATIONAL ANALYSIS OF FLOW AND HEAT TRANSFER IN PASSAGES WITH ATTACHED AND DETACHED RIB ARRAYS

Mouldi Kanoun
Computational Fluid Dynamics and Transfer Phenomena research unit (C.F.D.T.P.) National School of Engineering of Sfax (ENIS), University of Sfax, Tunisia
Mounir Baccar
National School of Engineers of Sfax ENIS, University of Sfax, Department of Mechanical Engineering, Computational Fluid Dynamic and Transfer Phenomena CFDTP, B.P. 1173 C.P. 3038, Sfax, Tunisia
Mohamed Mseddi
National School of Engineers of Sfax ENIS, University of Sfax, Department of Mechanical Engineering, Computational Fluid Dynamic and Transfer Phenomena CFDTP, B.P. 1173 C.P. 3038, Sfax, Tunisia

要約

This paper presents the results of a numerical investigation of heat transfer and friction for the flow of air in passages with attached and detached rib arrays. This technique is used in internal cooling methods. Four geometric configurations are used in the calculations. The governing equations are solved in a two-dimensional domain using a finite-volume formulation. The SIMPLE algorithm for the velocity-pressure coupling is employed. The results are obtained for Reynolds numbers ranging from 200 to 1000. The rib height and rib width-to-channel hydraulic diameter, detached distance-to-height rib ratio, pitch-to-height rib ratio, and Prandtl number are fixed at h = w = 0.2, C = 0.5, p = 10, and Pr = 0.71, respectively. The grid is nonuniform and highly concentrated close to the rib to capture high gradient velocity, pressure, and temperature. A uniform temperature through the ribs and all walls was assumed. The interaction between the hydrodynamic and thermal structures is developed. The effect of geometrical configurations on flow and heat transfer has been detailed by a systematic analysis.We have determined the distributions of velocity, friction factor, temperature, and Nusselt number according to the different geometrical configurations and Reynolds numbers.