Journal ArticleDOI
Wetting delay due to film and transition boiling on hot surfaces
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TLDR
In this paper, the authors found that the time to achieve wetting of hot rods in air by a hot water jet was found to be a very strong function of water subcooling and surface thermal conductivity.About:
This article is published in Nuclear Engineering and Design.The article was published on 1976-02-01. It has received 54 citations till now. The article focuses on the topics: Nucleate boiling & Boiling.read more
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Book ChapterDOI
Jet Impingement Boiling
TL;DR: In this paper, the authors provide a comprehensive review and analysis of the current knowledge base on nucleate boiling heat transfer and on the critical (maximum) heat flux in impinging jet systems.
Journal ArticleDOI
Jet Impingement Boiling From a Circular Free-Surface Jet During Quenching: Part 1—Single-Phase Jet
TL;DR: In this paper, a two-phase (water-air) circular free-surface jet is used to quench a cylindrical copper specimen, initially at a uniform temperature exceeding the temperature corresponding to maximum heat flux, by injecting small bubbles into the jet upstream of the nozzle exit.
Journal ArticleDOI
Delay of wetting propagation during jet impingement quenching for a high temperature surface
TL;DR: In this article, the authors investigated transient heat transfer with a subcooled water jet during quenching of hot cylindrical blocks made of copper, brass and steel for initial surface temperatures from 250 to 400°C.
Journal ArticleDOI
Thermal atomisation of a liquid drop after impact onto a hot substrate
TL;DR: In this article, the authors focused on the mechanisms of thermal atomisation of a drop impacting onto a hot substrate, characterised by the wetting and dewetting of the substrate, caused not by the rim dynamics, but induced by thermal effects.
Journal ArticleDOI
Jet impingement quenching phenomena for hot surfaces well above the limiting temperature for solid–liquid contact
TL;DR: In this paper, a 2-mm water jet of 5-80-k subcooling and 3-15m/s velocity was impinged on the flat surface of a cylindrical steel/brass block.
References
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Journal ArticleDOI
The leidenfrost phenomenon: film boiling of liquid droplets on a flat plate
TL;DR: In this article, an analytical model of the Leidenfrost phenomenon is postulated, and the instantaneous evaporation rate is found by satisfying the heat, mass, and momentum balances for this model.
Journal ArticleDOI
The physics of rewetting in water reactor emergency core cooling
TL;DR: The physical processes involved in the rewetting of high temperature surfaces have been shown to be identical for both falling water films and bottom flooding as discussed by the authors, and the variation of rewetting velocity with mass flow has been determined, and shown to have independent of hydraulic diameter over the range 0.2-6 mm of practical interest.
Journal ArticleDOI
Effect of Core Spray Cooling in Transient State after Loss of Coolant Accident
TL;DR: In this paper, the surface of the exposed fuel rod after loss of coolant accident can be considered close to adiabatic state, and the speed of downward progress of the wet front was measured, and an empirical equation obtained.
Journal ArticleDOI
The relationship of quench data to steady-state pool boiling data
A.E. Bergles,W.G Thompson +1 more
TL;DR: In this paper, it was shown that under certain conditions there are large differences between the boiling characteristics of quenched specimens and boiling data obtained from conventional steady-state experiments, and that the distorted boiling curves obtained when quenching can be attributed to elevation of the q ∆ min condition in the case of Freon-113 and water, and lowering of the ∆min condition in case of nitrogen.