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Evaporative instability at the superheat limit

Sturtevant, B. and Shepherd, J. E. (1982) Evaporative instability at the superheat limit. Applied Scientific Research, 38 (1). pp. 85-97. ISSN 0003-6994. doi:10.1007/bf00385940.

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The explosive vaporization of a single bubble inside a droplet of butane heated to the limit of superheat has been investigated experimentally using short-exposure photographs and fast-response pressure measurements. An interfacial instability driven by rapid evaporation has been observed on the surface of the bubbles. It is proposed that the Landau mechanism of instability, originally described in connection with the instability of laminar flames, also applies to rapid evaporation at the superheat limit. Calculations suggest that other technically important fluids may be even more unstable when boiling at the superheat limit. The rate of evaporation after the onset of instability is estimated from the experimental measurements to be two orders of magnitude greater than would be predicted by conventional bubble-growth theories that do not account for the effects of instability. An estimate of the mean density within the bubbles during the evaporative stage indicates that it is nearly equal to the critical density of butane.

Item Type:Article
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URLURL TypeDescription ItemConference Paper
Shepherd, J. E.0000-0003-3181-9310
Additional Information:© 1982 Springer Verlag. Issue Date: January 1982.
Subject Keywords:Evaporation; Explosive; Experimental Measurement; Pressure Measurement; Butane
Issue or Number:1
Record Number:CaltechAUTHORS:20200702-140623367
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Official Citation:Sturtevant, B., Shepherd, J.E. Evaporative instability at the superheat limit. Applied Scientific Research 38, 85–97 (1982).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104215
Deposited By: Tony Diaz
Deposited On:02 Jul 2020 21:12
Last Modified:16 Nov 2021 18:29

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