A stable meniscus is formed by a circular nozzle dispensing water over a heated circular face of a rotating cylindrical copper block. The nozzle is offset from the axis of rotation of the copper block and thus a moving meniscus is formed on the surface. The water flow rate, heater surface temperature, and the speed of rotation are controlled to provide a stable meniscus with continuous evaporation of water without any meniscus breakup. The study provides an important insight into the role of the evaporating liquid-vapor interface and transient heat conduction around a nucleating bubble in pool boiling.
Issue Section:
Evaporative Boiling and Condensation
Keywords:
evaporation,
two-phase flow,
flow instability,
nozzles,
rotational flow,
heat conduction,
boiling,
bubbles
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21.
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25.
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26.
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27.
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28.
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