Results of the experimental studies of the vapor film behavior on a highly heated hemispherical surface immersed into water subcooled relative to the saturation temperature are presented. Transition from film to nucleate boiling was studied with the use of high-speed videocamera. Temperature characteristics of the vapor-film collapse, pressure pulses, acoustic effects, and vapor-film thickness were measured, as well. The decisive influence of the material and condition of the heating surface and the degree of water subcooling on the mode of transition (explosion-like, quiet, or intermediate one) was confirmed. The explosion-like mode of the vapor-film collapse is accompanied by ejection of vapor jets (single or multiple) and pressure pulses with an amplitude of up to 1 MPa. A structure of the pulse packs under multiple jets ejection was investigated. Synchronous measurements of the pressure pulses and an area of the direct cold liquid contact with a hot surface made it possible to determine a time delay between an instant of the contact and the pressure pulse. Typical value of this time lag was several tens microseconds. The dependence of the pulse frequency and the number of pulses on the hemisphere temperature was obtained.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4936-1
PROCEEDINGS PAPER
Experimental Study of the Vapor Film Behavior on a Highly Heated Surface Immersed Into Subcooled Water Available to Purchase
Kirill I. Belov,
Kirill I. Belov
Joint Institute for High Temperatures, Moscow, Russia
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Yury P. Ivochkin,
Yury P. Ivochkin
Joint Institute for High Temperatures, Moscow, Russia
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Konstantin G. Kubrikov,
Konstantin G. Kubrikov
Joint Institute for High Temperatures, Moscow, Russia
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Alexandr A. Oksman,
Alexandr A. Oksman
Joint Institute for High Temperatures, Moscow, Russia
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Sergei N. Vavilov,
Sergei N. Vavilov
Joint Institute for High Temperatures, Moscow, Russia
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Yury A. Zeigarnik,
Yury A. Zeigarnik
Joint Institute for High Temperatures, Moscow, Russia
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Vyacheslav G. Zhilin
Vyacheslav G. Zhilin
Joint Institute for High Temperatures, Moscow, Russia
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Kirill I. Belov
Joint Institute for High Temperatures, Moscow, Russia
Yury P. Ivochkin
Joint Institute for High Temperatures, Moscow, Russia
Konstantin G. Kubrikov
Joint Institute for High Temperatures, Moscow, Russia
Alexandr A. Oksman
Joint Institute for High Temperatures, Moscow, Russia
Sergei N. Vavilov
Joint Institute for High Temperatures, Moscow, Russia
Yury A. Zeigarnik
Joint Institute for High Temperatures, Moscow, Russia
Vyacheslav G. Zhilin
Joint Institute for High Temperatures, Moscow, Russia
Paper No:
IHTC14-22202, pp. 183-189; 7 pages
Published Online:
March 1, 2011
Citation
Belov, KI, Ivochkin, YP, Kubrikov, KG, Oksman, AA, Vavilov, SN, Zeigarnik, YA, & Zhilin, VG. "Experimental Study of the Vapor Film Behavior on a Highly Heated Surface Immersed Into Subcooled Water." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 1. Washington, DC, USA. August 8–13, 2010. pp. 183-189. ASME. https://doi.org/10.1115/IHTC14-22202
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