Investigation of bubble departure mechanism in subcooled flow boiling of water using high-speed photography
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Date
1995Author
Kandlikar, Satish
Mizo, Viktor
Cartwright, Michael
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Show full item recordAbstract
The bubble growth rates under flow boiling conditions are
obtained experimentally for subcooled flow of water in a
rectangular channel 3 mm x 50 mm wide and over a 10 mm
diameter heater surface in the bulk temperature range of 60
to 80 °C, and a liquid Re range of 1290 to 5160, and near
atmospheric pressure. A high speed camera capable of
obtaining images at a frame rate of up to 60001s and a
microscope capable of providing up to 1350X magnification
are employed. The effects of flow rate, subcooling, heater
surface temperature, and cavity size are investigated and
specific trends observed in the growth rate behavior are
reported. The growth rates in flow boiling are compared with
the ones for pool boiling case, and a need for an improved
model for predicting bubble growth rates in flow boiling is
established.
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