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Hybrid Methods in Engineering

ISSN Druckformat: 1099-2391
ISSN Online: 2641-7359

Archives: Volume 1, 1999 to Volume 4, 2002

Hybrid Methods in Engineering

DOI: 10.1615/HybMethEng.v2.i2.70
12 pages

ANALYSIS OF LAMINAR FORCED CONVECTION IN ANNULAR DUCTS USING INTEGRAL TRANSFORMS

Luiz M. Pereira
Laboratory of Transmission and Technology of Heat, LTTC, Engenharia Mecanika, EE/COPPE, Universidade Federal do Rio de Janeiro, Cx. Postal 68503, Ilha do Fundao, Rio de Janeiro, Brasil
Renato M. Cotta
Laboratory of Nano- and Microfluidics and Microsystems, LabMEMS, Mechanical Engineering Department and Nanotechnology Engineering Dept., POLI & COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, Cx. Postal 68503, Rio de Janeiro, RJ, CEP 21945-970, Brazil; Interdisciplinary Nucleus for Social Development—NIDES/CT, UFRJ, Brazil; Mechanical Engineering Department, University College London, UCL, United Kingdom
Jesus Salvador Perez Guerrero
Brazilian Nuclear Energy Commission - CNEN

ABSTRAKT

Laminar forced convection in annular ducts is analyzed using the Generalized Integral Transform Technique (GITT) to solve the Navier-Stokes and energy equations in the cylindrical coordinates system. Some cases involving different aspect ratios, given by the relation between internal and external duct diameters, and for Prandtl number Pr = 0.72, are more closely considered. Numerical results are obtained for local temperature profiles, bulk mean temperature, and local Nusselt number. Comparisons with previous results in the literature are performed to validate the present simulation.


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