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OPTIMIZATION OF ELEMENTAL FLOW PASSAGES OF FLUID FLOW NETWORKS

DOI: 10.1615/IHTC13.p22.310
page 12

W. Wechsatol
King Mongkut's University of Technology Thonburi, Thailand

Sylvie Lorente
Université de Toulouse; INSA; 135, avenue de Rangueil, F-31 077 Toulouse Cedex 04, France

Adrian Bejan
Department of Mechanical Engineering and Materials Science, Duke University, Box 90300, Durham, NC 27708-0300, USA

Juan C. Ordonez
Florida State University, USA

S. C. Kosaraju
Florida State University, USA

Abstract

In this paper, an elemental T shaped unit of a constructal network has been optimized. The effects of junction losses and surface roughness on the optimal shape of fluid flow passages are considered. It is shown that the effect of the junction losses on the design of the fluid flow passage decreases as the svelteness ratio Sv, the ratio between the external constraint (area) and the internal constraint (volume of the flow passages), becomes larger. Two dimensionless terms, the dimensionless shape parameter p~ and the dimensionless group MS1/2/μ are introduced. The paper demonstrates the usefulness of these two parameters in the optimization of flow networks. The performance of an optimal T shaped unit in the cooling of a heat generating plate is reported.

IHTC-13 Digital Library

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