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Lookup NU author(s): Dr Jonathan McDonough,
Dr Richard Law,
Professor Adam Harvey
This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Chemical Society, 2019.
For re-use rights please refer to the publisher's terms and conditions.
Additive manufacturing enables the fabrication of geometries previously unavailable via conventional means. Here, a helically coiled channel containing a secondary helical coil insert was 3D-printed and operated in a net flow with superimposed oscillation. This “coil-in-coil” geometry exhibited exceptional plug flow quality at low Reynolds numbers (Re = 10–50). High levels of plug flow were observed at oscillation amplitudes of 2–8 mm. The greatest degree of plug flow occurred with Reo/Ren = 2–7 and Sr = 1–2. Surprisingly, the coil-in-coil geometry demonstrated excellent plug flow behavior (N = 40–100) at very low oscillation frequencies (f = 0.25–0.5 Hz). Compared to various benchmark designs (“plain” coiled tube, straight tube containing a helical coil insert, and plain straight tube), the coil-in-coil geometry demonstrated enhanced plug flow quality at low frequencies (≤1 Hz) at all amplitudes and low amplitudes (1–2 mm) at all frequencies.
Author(s): McDonough JR, Armett J, Law R, Harvey AP
Publication type: Article
Publication status: Published
Journal: Industrial & Engineering Chemistry Research
Online publication date: 01/11/2019
Acceptance date: 01/11/2019
Date deposited: 20/01/2020
ISSN (print): 0888-5885
ISSN (electronic): 1520-5045
Publisher: American Chemical Society
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