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International Heat Transfer Conference 13

ISBN 印刷: 1-56700-226-9 (CD)
ISBN オンライン: 1-56700-225-0

THERMALLY DEVELOPING FLOW OF POWER-LAW NON-NEWTONIAN FLUIDS IN DOUBLE-SINE DUCTS

DOI: 10.1615/IHTC13.p20.90
page 12

Joao N. N. Quaresma
School of Chemical Engineering, Universidade Federal do Para, FEQ/UFPA, Campus Universitario do Guama, 66075-110, Belem, PA, Brazil

Evaldiney Ribeiro Monteiro
Chemical and Food Engineering Department, Universidade Federal do Pará, UFPA, Brazil

Cléber Lisboa Chaves
Chemical Engineering Department, Universidade Federal do Para-UFPA, Campus Universitario do Guama, RuaAugusto Correa, 01, 66075-900 -Belem, PA, Brazil

Emanuel N. Macedo
Mechanical Engineering Department, Chemical Engineering Department, Universidade Federal do Para-UFPA, Campus Universitario do Guama, RuaAugusto Correa, 01, 66075-900 -Belem, PA, Brazil

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

要約

A hybrid analytical-numerical approach based on the Generalized Integral Transform Technique (GITT) is employed to solve the momentum and energy equations, in thermally developing lammar flow of power-law non-Newtonian fluids inside double-sine ducts. Constant wall temperature is used as thermal boundary condition. Reference results are established for quantities of practical interest, such as the product of the Fanning friction factor-Reynolds number, dimensionless average temperature and Nusselt numbers within the thermal entry region, for the range of flow behavior index (0.6 < n < 1.5) and aspect ratio (0.5 < γ < 2). Also, critical comparisons are made with results available in the literature for direct numerical and approximate approaches.

IHTC-13 Digital Library

Measurement of fluid temperature with an arrangement of three thermocouples FLOW BOILING OF A HIGHLY VISCOUS POLYMER SOLUTION