منابع مشابه
Self - propelled film - boiling liquids
We report that liquids perform self-propelled motion when they are placed in contact with hot surfaces with asymmetric (ratchet-like) topology. The pumping effect is observed when the liquid is in the film-boiling regime, for many liquids and over a wide temperature range. We propose that liquid motion is driven by a viscous force exerted by vapor flow between the solid and the liquid.
متن کاملInstability of subcooled boiling film on a vertical wall
Consider a vertical plate with a leading edge. The temperature of the plate is above the spontaneous nucleation temperature, so that vapor completely covers the plate. Two-dimensional quasi-parallel theory is used to examine the stability of the two-phase system. Numerical calculations show that the main parameter determining the thickness of the vapor film and its stability is the difference b...
متن کاملForced Convection Subcooled Boiling of Binary Mixtures
A mode based on an additive mechanism of heat transfer is proposed for forced convection subcooled boiling of binary mixtures. The contributing modes of heat transfer are: (i) the heat transferred as latent heat by the rising bubbles, (ii) the heat transferred as the heat contained in the superheated thermal layer that is removed from the surface in the wake of the rising bubbles and (iii) the ...
متن کاملStudy of Subcooled Film Boiling on a Horizontal Disc : 1 Part 2 — Experiments
Experiments were performed to study subcooled film boiling of performance liquid PF5060 (made by 3-M Company) on a horizontal copper disc. The experiments were performed for two regimes of film boiling involving departing vapor bubbles (low subcooling) and nondeparting vapor bubbles (high subcooling). By employing high speed digital camera, data were obtained for temporal variation of bubble he...
متن کاملStudy of Subcooled Film Boiling on a Horizontal Disc : Part I —
In this work subcooled film boiling on a horizontal disc was studied analytically/ numerically. Linearized stability analysis of a vapor film underlying a pool of heavier liquid was performed in three-dimensional, cylindrical coordinates. From the analysis the dominant wavelength and configuration of vapor releasing nodes was identified. Complete numerical simulation of the nonlinearly evolving...
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ژورنال
عنوان ژورنال: Industrial & Engineering Chemistry
سال: 1957
ISSN: 0019-7866,1541-5724
DOI: 10.1021/ie50575a043