A Photographic Study of Boiling in an Accelerating System

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Abstract
Pool boiling of distilled and degassed water in an accelerating system was studied by means of high speed motion pictures, up to 20,000 frames per sec. The acceleration was produced by the centrifuge principle with the heating surface oriented normal to the vectorial sum of the centrifugal acceleration and the gravitational acceleration. The range of experimental variables include: heat flux between 16,000 and 72,000 Btu/hr-ft2, acceleration between one and 100 times standard gravitational acceleration, and subcooling of 2 and 10 deg F. From the photographs, data are presented on bubble growth rates, departure sizes, frequency of formation, and departure contact angles.

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