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Evaporative instability at the superheat limit

Sturtevant, B. and Shepherd, J. E. (1982) Evaporative instability at the superheat limit. In: Mechanics and Physics of Bubbles in Liquids. Springer Netherlands , Dordrecht, pp. 85-97. ISBN 9789400975347.

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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:Book Section
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URLURL TypeDescription ReadCube access ItemJournal Article
Shepherd, J. E.0000-0003-3181-9310
Additional Information:© Martinus Nijhoff Publishers, The Hague 1982. This research was supported by the United States Department of Energy, Division of Chemical Sciences, under Project Agreement DE-AT03-80ER10634.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AT03-80ER10634
Subject Keywords:Mass Flux; Vapor Bubble; Bubble Growth; Laminar Flame; Rapid Evaporation
Record Number:CaltechAUTHORS:20201009-102843920
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105960
Deposited By: George Porter
Deposited On:09 Oct 2020 21:07
Last Modified:16 Nov 2021 18:48

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