Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
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COMPUTATIONAL ANALYSIS OF FLOW AND HEAT TRANSFER IN PASSAGES WITH ATTACHED AND DETACHED RIB ARRAYS
RESUMO
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.
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Numerical Simulation of Integral Roughness, Laminar Flow in Tubes with Roughness and Reynolds Analogy for Heat and Momentum Transfer, in Insert Devices and Integral Roughness in Heat Transfer Enhancement, 2020. Crossref
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, 2D Roughness, 3D Roughness and Roughness Applications, in Insert Devices and Integral Roughness in Heat Transfer Enhancement, 2020. Crossref