HAL Id: hal-01441565
https://hal.archives-ouvertes.fr/hal-01441565
Submitted on 25 Jan 2017
HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.
L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Explosive boiling?
Michiel van Limbeek, Henri Lhuissier, Andrea Prosperetti, Chao Sun, Detlef Lohse
To cite this version:
Michiel van Limbeek, Henri Lhuissier, Andrea Prosperetti, Chao Sun, Detlef Lohse. Explosive boiling?.
Physics of Fluids, American Institute of Physics, 2013, 25, pp.91102 - 91102. �10.1063/1.4820014�.
�hal-01441565�
Explosive boiling?
Michiel A. J. van Limbeek, Henri Lhuissier, Andrea Prosperetti, Chao Sun, and Detlef Lohse
Citation: Phys. Fluids 25, 091102 (2013); doi: 10.1063/1.4820014 View online: http://dx.doi.org/10.1063/1.4820014
View Table of Contents: http://pof.aip.org/resource/1/PHFLE6/v25/i9 Published by the AIP Publishing LLC.
Additional information on Phys. Fluids
Journal Homepage: http://pof.aip.org/
Journal Information: http://pof.aip.org/about/about_the_journal
Top downloads: http://pof.aip.org/features/most_downloaded
Information for Authors: http://pof.aip.org/authors
PHYSICS OF FLUIDS 25, 091102 (2013)
FIG. 1. Boiling of a superheated water drop in sunflower oil (sequence of images (a)–(d) at the bottom and enlargement of (c) at the top). The whole drop (a), resting at the bottom of a glass container, vaporises explosively. As a consequence, the radiusRof the vapour bubble overshoots and oscillates around its equilibrium value. WhenRis minimum the positive acceleration ¨Rtowards the denser phase promotes a Rayleigh-Taylor destabilisation of the bubble interface, in the form of prominent lobes, which leads to the bubble fragmentation. The temperature of the system is 190◦C at ambient pressure, the drop radius is 0.8 mm and the images a, b, c, and d are, respectively, taken at t=0, 2, 4, and 40 ms after nucleation occurred.
Explosive boiling?
Michiel A. J. van Limbeek,
1Henri Lhuissier,
1Andrea Prosperetti,
1,2Chao Sun,
1and Detlef Lohse
11
Physics of Fluids, University of Twente, Enschede 7500AE, The Netherlands
2
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
(Received 26 July 2013; published online 18 September 2013) [http://dx.doi.org/10.1063/1.4820014]
A liquid drop immersed into a host liquid can be strongly superheated before nucleation of the first vapour bubble occurs. A millimetre-size water drop indeed survives several minutes at T = 170–190
◦C at ambient pressure into sunflower or silicon oil. When nucleation eventually occurs, the drop may boil explosively, as shown in Figure 1 with sunflower oil as the host liquid.
In this case the bubble growth is only limited by the diffusion of heat and the whole drop vaporises within milliseconds.
The boiling behaviour, however, changes dramatically when the host liquid wets the drop’s liquid, as with the water/silicon oil system shown in Fig. 2. In this system the nucleation of the bubble also occurs at the drop’s interface, since it is energetically favourable. However, the subsequent boiling process is, here, rapidly stalled when the host liquid wets the drop and thus separates the vapour bubble from the liquid of the drop. The bubble is either totally expelled (Figure 3(a)), or a small stem of vapour remains, resulting in the regular, self-sustained, and minute-lasting boiling of the drop (Figures 3(b) and 3(c)). From the homogeneous size and spacing of the bubbles we deduce a constant evaporation rate for large time scales.
1070-6631/2013/25(9)/091102/2/$30.00 25, 091102-1 C 2013 AIP Publishing LLC
091102-2 van Limbeeket al. Phys. Fluids25, 091102 (2013)
FIG. 2. Shape of the nucleated bubble for different liquid surface tensionsσhandσtand liquid-liquid interfacial energies σht.1
FIG. 3. Boiling of mm size superheated water drops in silicone oil at T=170◦C and ambient pressure. (a) The nucleated bubble is expelled and the vaporization stops (t=0, 0.6, 1.8, 5.2, and 20 ms, respectively). (b) The bubble detaches and leaves a stem of vapour from which new bubbles grow and detach (the time-step between frames is 8 ms). (c) On the right-hand side, a train of bubble rises from the self-sustained nucleation site, illustrating the slow sequential boiling of the drop.
Surprisingly, both boiling behaviours lead, though by very distinct mechanisms, to the dispersion of the vapour phase into many small bubbles.
1G. R. Moore, “Vaporization of superheated drops in liquids,”AIChE J.5, 458–466 (1959).
