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Numerical treatment of laminar flow in helically coiled tubes of square cross section. Part I. Stationary helically coiled tubes

✍ Scribed by B. Joseph; E. P. Smith; R. J. Adler

Publisher: American Institute of Chemical Engineers
Year: 1975
Tongue: English
Weight: 890 KB
Volume: 21
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690210519

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Numerical solution of steady laminar flow in helically coiled tubes of square cross section for Dean numbers from 0.8 to 307.8 reveal two regimes of secondary flow. Up to Dean number of 100, the expected secondary flow pattern appears with twin counterrotating vortices. Above Dean numbers of 100, a new secondary flow regime, reported here for the first time, appears with four vortices. Flow visualization and pressure drop experiments confirm the transition.

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