منابع مشابه
Unorthodox bubbles when boiling in cold water.
High-speed movies are taken when bubbles grow at gold surfaces heated spotwise with a near-infrared laser beam heating water below the boiling point (60-70 °C) with heating powers spanning the range from very low to so high that water fails to rewet the surface after bubbles detach. Roughly half the bubbles are conventional: They grow symmetrically through evaporation until buoyancy lifts them ...
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A new index, the estimate of the error variance, which can be used to quantify the evolution of the flow patterns when multiphase components or tracers are difficultly distinguishable, was proposed. The homogeneity degree of the luminance space distribution behind the viewing windows in the direct contact boiling heat transfer process was explored. With image analysis and a linear statistical m...
متن کاملDetecting sound wave of bubbles produced in a boiling liquid
This experiment attempted to detect the sound wave produced by bubbles in boiling water and liquid nitrogen as an application for LUX, large underground xenon, which is expected to detect weakly interacting massive particles, WIMPs. Currently, there are still several steps needed to be done in order to detect the bubble waveform. Before proceeding any further, it is necessary to change the curr...
متن کاملAnalysis of pool boiling heat transfer: effect of bubbles sliding on the heating surface
Pool boiling on surfaces where sliding bubble mechanism plays an important role has been studied. The heat transfer phenomenon for such cases has been analysed. The model considers different mechanisms such as latent heat transfer due to microlayer evaporation, transient conduction due to thermal boundary layer reformation, natural convection and heat transfer due to the sliding bubbles. Both m...
متن کاملTurning bubbles on and off during boiling using charged surfactants
Boiling--a process that has powered industries since the steam age--is governed by bubble formation. State-of-the-art boiling surfaces often increase bubble nucleation via roughness and/or wettability modification to increase performance. However, without active in situ control of bubbles, temperature or steam generation cannot be adjusted for a given heat input. Here we report the ability to t...
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ژورنال
عنوان ژورنال: Journal of the Visualization Society of Japan
سال: 1996
ISSN: 1884-037X,0916-4731
DOI: 10.3154/jvs.16.supplement2_11