Publication de 4 numéros par an
ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336
Indexed in
SECONDARY FLOW AND HEAT TRANSFER IN AN AXIALLY ROTATING FLOW PASSAGE WITH SUDDEN EXPANSION
RÉSUMÉ
This article investigates rotational effects on secondary flow and heat transfer in rotating flow passages with sudden expansion. Consideration is given to steady-state incompressible laminar flow. The governing equations are discretized by means of a finite-difference technique and numerically solved to determine the distributions of velocity vector and fluid temperature under the appropriate boundary conditions. The Reynolds number and rotation rate are varied to determine their effects on both the formation of secondary flows and the heat-transfer performance in the sudden expansion region. It is disclosed from the study that: (1) for a laminar flow in a pipe with sudden expansion, axial rotation causes the secondary flow zone to stretch and amplifies the heat-transfer performance in the expansion region, and (2) the elongation of the secondary flow zone and heat-transfer performance are enhanced with an increase in both the rotation rate and the Reynolds number. Results may find applications in automotive and rotating hydraulic transmission lines.
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Torii Shuichi, Yang Wen-Jei, Thermal-fluid transport phenomena in an axially rotating flow passage with twin concentric orifices of different radii, International Journal of Energy Research, 30, 10, 2006. Crossref
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TORII SHUICHI, YANG WEN-JEI, Numerical Analysis on Flow and Heat Transfer in an Axially Rotating Flow Passage with a Concentric Orifice, The International Journal of Rotating Machinery, 8, 4, 2002. Crossref