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Melt-front instabilities during the combustion of a spinning polymer disk

Published online by Cambridge University Press:  23 October 2024

S.R. Hostler ,
V. Nayagam Open the ORCID record for V. Nayagam [Opens in a new window]  and
F.A. Williams
S.R. Hostler
Affiliation:
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
V. Nayagam*
Affiliation:
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
F.A. Williams
Affiliation:
Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093, USA
*
†Email address for correspondence: [email protected]
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Abstract

Melt-front instabilities during the combustion of a spinning polymethylmethacrylate disk in air are investigated. Mainly straight rivulet-type flow patterns were found, though under certain conditions saw-tooth patterns were observed. The measured wavelengths of the instabilities agree with earlier theoretical predictions of driven contact-line instabilities.

JFM classification

Geophysical and Geological Flows: Rotating flows Interfacial Flows (free surface): Fingering instability Reacting Flows: Combustion
Type
JFM Papers
Information
Journal of Fluid Mechanics , Volume 997 , 25 October 2024 , A66
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Creative Commons
This is a work of the US Government and is not subject to copyright protection within the United States.
Copyright
© National Aeronautics and Space Administration (NASA), 2024. Published by Cambridge University Press.

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