Results 211 to 220 of about 1,904 (245)

On the Mechanism of Nucleate Boiling

Transactions of the Japan Society of Mechanical Engineers, 1965
Abstract The mechanism of nucleate boiling from a superheated surface is studied fluid-dynamically and thermodynamically. The asymmetry of the fluid-dynamical field associated with the existence of a heating surface causes the bubbles to move away from the surface with a nearly constant speed, while the surface area of the bubbles increases linearly
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Nucleate boiling in binary mixtures

International Journal of Heat and Mass Transfer, 1977
Abstract It is well established that many parameters associated with nucleate boiling of a mixture differ significantly from those for a pure fluid of identical physical properties. Some authors attribute this difference to changes in bubble growth rates due, ultimately, to a resistance to the interdiffusion of the species.
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Nucleate boiling in bidistillate droplets

International Journal of Heat and Mass Transfer, 2014
Abstract Dynamics of nucleate boiling in droplets of bidistillate on different wall surfaces was studied experimentally. These experiments were carried out on the rough copper and on the polished surface with plasma spraying of a golden film. The surface state was investigated by an electron microscope and 3D image processing software. Characteristic
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EHD Enhancement of Nucleate Boiling

Journal of Heat Transfer, 1990
This paper describes: (a) an experimental investigation into the effect of an electric field applied to pool boiling of Freon (R114) on a finned tube and (b) a theoretical model of electrically enhanced nucleate boiling applicable to simple surfaces only.
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Bubble shapes in nucleate boiling

AIChE Journal, 1966
AbstractAn attempt is made to explain the differently shaped bubbles observed growing on a surface during nucleate boiling of water. Some of the bubbles photographed were very close to the spherical shape, while others were close to the hemispherical.
M. A. Johnson, Javier De La Peña, R. B. Mesler   +2 more
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Differential model of nucleate boiling

High Temperature, 2007
The suggested mathematical model of nucleate boiling based on a set of ordinary differential equations describes the space-time distribution of wall superheating for a given heat flux density. The averaged characteristics reproduce heat transfer under conditions of boiling in a wide pressure range.
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Nucleation of boiling and cavitation

Journal of Physics D: Applied Physics, 1977
A number of measurements of the conditions required to nucleate boiling and cavitation in stagnant water are described, and used to test theories of nucleation by surface cavities. For given conditions prior to nucleation the concept of a constant cavity radius appears valid.
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Nucleate boiling “frontiers": Boiling inception and boiling crisis

2016
This paper has the (ambitious) aim to review and discuss the fundamental theories and the more recent findings at the "frontiers" of nucleate boiling, i.e. its boundaries: nucleation onset and CHF, where its efficient performance is terminated. Nucleate boiling and is dominated by bubble dynamics, however in the past years it has become increasingly ...
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Nucleate Boiling

2019
Vijay K. Dhir, Satish G. Kandlikar, Yasunobu Fujita, Yoshihiro Iida, Richard Heist   +4 more
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Visualization of nucleate boiling

Physica B: Condensed Matter, 2003
Masanori Katagiri, Minoru Maeda, Yoshiko Fujii   +2 more
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