Direct contact heating of laminar falling liquid jets
About: This article is published in International Journal of Heat and Mass Transfer.The article was published on 1976-01-01. It has received 4 citations till now. The article focuses on the topics: Laminar flow & Falling (sensation).
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TL;DR: A review of the literature on heat transfer can be found in this article, where a number of books dealing with heat transfer or including heat-transfer topics have appeared on the market.
33 citations
TL;DR: In this article, it is shown that the velocity field in a free falling liquid jet is mainly influenced by the action of gravity and the temperature distribution in the jet is similar to that in developing flows.
19 citations
TL;DR: It has been proved in this article that if nozzle geometry causes a change in jet hydrodynamics, it also produces a change of heating intensity, and it was found that the best effects on heating jets broken by axisymmetrical vibrations were achieved for turbulent jets in the drop-like region.
12 citations
TL;DR: In this paper, the authors investigated the steady condensation of saturated steam on a vertical downward water jet and found that as the Reynolds number and the jet length are increased, the condensation number decreases and then increases beyond a certain values, and that it increases monotonously with an increase in the steam pressure.
Abstract: As the fundamental study on the lithium jet cooling for an inertial-confinement fusion reactor and the ECCS spray cooling for light water reactors, the experiment was performed to investigate the steady condensation of saturated steam on a vertical downward water jet The experimental parameters were the nozzle diameter of 3 and 5 mm, the jet length of 60~316mm, the outlet velocity of 2~12m/s, the outlet temperature of 30~70°C, and the pressure of 003~044 MPa, which corresponds to the Reynolds number of 135 × 104271 × 105 and the Prandtl number of 10~52 It has been found that as the Reynolds number and the jet length are increased, the condensation Stanton number decreases and then increases beyond a certain values, and that it increases monotonously with an increase in the steam pressure From the result and the photographic observation, it has been found that the experimental range can be classified to four regions based on the onsets of jet break-up and surface disturbance, or entrainment, and f
2 citations
References
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TL;DR: In this article, the flow behavior of Newtonian jets is analyzed by the use of a coordinate system which reduces the problems associated with free boundaries and the resulting general equations are simplified by a boundary-layer type analysis and numerical and approximate analytical solutions are presented.
104 citations
TL;DR: In this paper, the authors studied the transfer mechanism involved in latent heat transport in isopentane bubbles rising in water and found that up to 80% liquid content, the bubbles deform and oscillate and heat is transferred by turbulent convection.
Abstract: Motion picture studies of condensation of isopentane bubbles rising in water elucidate the transfer mechanism involved in latent heat transport.
In general, two characteristic regions are noted. In the first region, up to some 80% liquid content, the bubbles deform and oscillate and heat is transferred by turbulent convection. In the second region the rate of transfer is controlled by the resistance of the condensed liquid, and heat is mainly by conduction. The effect of temperature differences between the bubble and the continuous phase (up to 3.5°C.) on the transfer coefficients could not be isolated, whereas that of the initial diameter of the bubble was quite marked.
The results are in agreement with those obtained in earlier studies of evaporating drops in immiscible liquids, indicating the similarity of the basic heat transfer mechanisms.
50 citations
TL;DR: In this paper, the heating of a laminar liquid jet by the condensation of its saturated vapour is analyzed and a solution for heat transfer in circular and flat ducts held at constant wall temperature is adapted to the problems of vapour condensation on a cylindrical jet and on a sheet of uniform thickness respectively.
46 citations
TL;DR: In this article, a method has been developed to study the heat transfer in steam condensation on laminar water sheets generated by the fan spray nozzle, and the effects of steam pressure and air content in steam on the heat-transfer coefficient are investigated.
29 citations
TL;DR: In this paper, a quasi-steady state solution for an evaporating lens-shaped drop placed on a semi-infinite stagnant liquid medium was used to test the transfer efficiency of spray columns and other three phase exchangers, in which volatile matter was allowed to float on an immiscible nonvolatile liquid.
24 citations