Library Subscription: Guest

ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

AN EXPERIMENTAL AND THEORETICAL STUDY OF LAMINAR FLUID FLOW AND HEAT TRANSFER IN HELICAL COILS

Get access (open in a dialog) DOI: 10.1615/IHTC10.2970
pages 321-326

Abstract

This paper presents the major results of the study of fluid flow and heat transfer in helical coils with substantial pitch. The fully developed axial and secondary velocities in the helical coils were measured by an LDA system and compared well with our numerical prediction. The energy equation has been solved theoretically and numerically. The results indicate that torsion can remarkably distort the symmetry of the vortices of the secondary flow and twist the contours of the axial velocity and temperature. In some cases, the torsion caused by substantial pitch may significantly reduce the heat transfer rate.