Results 201 to 210 of about 25,442 (255)
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Pulsating and synthetic impinging jets
Journal of Visualization, 2005This is the second part of a survey summarizing authors' research over a period of two decades on enhancing impinging jet heat and/or mass transfer by periodic unsteadiness of nozzle flow rate. The first part, Tesar and Travnicek (2004 b), identified the reasons why pulsation does not always improve the transfer rate: the pulses do not reach up to the ...
Václav Tesar, Zdenek Trávnícek
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Chemical Engineering and Processing: Process Intensification, 1990
Abstract This article reviews the authors' achievements in the field of impinging jet absorbers with and without chemical reaction. The major conclusions of the investigations indicated that such absorbers exhibit the highest values for the mass transfer coefficients, and that such devices equipped with Caldyn CSL nozzles are a more attractive option
Abraham Tamir +2 more
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Abstract This article reviews the authors' achievements in the field of impinging jet absorbers with and without chemical reaction. The major conclusions of the investigations indicated that such absorbers exhibit the highest values for the mass transfer coefficients, and that such devices equipped with Caldyn CSL nozzles are a more attractive option
Abraham Tamir +2 more
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Journal of the Hydraulics Division, 1977
The characteristics of the velocity and pressure fields of a round turbulent jet impinging onto a plate have been studied. Previous studies covered impingement heights that placed the plate in the fully developed flow region of the jet. The present study covered impingement heights between 0 and 20 nozzle radii.
Touraj Davanipour, Sedat Sami
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The characteristics of the velocity and pressure fields of a round turbulent jet impinging onto a plate have been studied. Previous studies covered impingement heights that placed the plate in the fully developed flow region of the jet. The present study covered impingement heights between 0 and 20 nozzle radii.
Touraj Davanipour, Sedat Sami
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Combustion and Flame, 1968
Abstract An experimental investigation has been made of a flame impinging at an angle of 20° on the hearth of a furnace. Measured velocity and temperature profiles in the flame were found to have the same reduced form as profiles obtained for a plane heated impinging jet, by Mathieu.
J.M. Bee´r, N.A. Chigier
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Abstract An experimental investigation has been made of a flame impinging at an angle of 20° on the hearth of a furnace. Measured velocity and temperature profiles in the flame were found to have the same reduced form as profiles obtained for a plane heated impinging jet, by Mathieu.
J.M. Bee´r, N.A. Chigier
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Jet-Impingement Heat Transfer for a Circular Jet Impinging in Crossflow on a Cylinder
Journal of Heat Transfer, 1984Quasi-local heat transfer coefficients were measured on a cylinder on which a circular jet impinged in crossflow. The jet diameter and the distance between the initiation of the jet and the cylinder surface were varied parametrically, as was the jet Reynolds number.
E. M. Sparrow +2 more
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Drying Technology, 1992
ABSTRACT In coating and gravure printing, an impinging jet nozzle with high thermal efficiency for drying of coated film was developed. Trial production 0f 40 kinds of nozzle enables to develop a high-performance impinging jet nozzle with heat transfer coefficient 1.5 times larger than that of current slit nozzle, through measurement of heat transfer ...
Satoru INOUE +3 more
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ABSTRACT In coating and gravure printing, an impinging jet nozzle with high thermal efficiency for drying of coated film was developed. Trial production 0f 40 kinds of nozzle enables to develop a high-performance impinging jet nozzle with heat transfer coefficient 1.5 times larger than that of current slit nozzle, through measurement of heat transfer ...
Satoru INOUE +3 more
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Physics of Fluids A: Fluid Dynamics, 1991
An analysis of the characteristics of the spray produced by an impinging-jet injector is presented. Predictions of the spray droplet size and distribution are obtained through studying the formation and disintegration of the liquid sheet formed by the impact of two cylindrical jets of the same diameter and momentum. Two breakup regimes of the sheet are
Ibrahim, E. A., Przekwas, A. J.
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An analysis of the characteristics of the spray produced by an impinging-jet injector is presented. Predictions of the spray droplet size and distribution are obtained through studying the formation and disintegration of the liquid sheet formed by the impact of two cylindrical jets of the same diameter and momentum. Two breakup regimes of the sheet are
Ibrahim, E. A., Przekwas, A. J.
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2017
Die interne Kühlung von Turbinenschaufeln und Triebwerke senkrecht startender und landender Flugzeuge sind nur zwei von vielen Anwendungsbeispielen, bei denen Prallstrahlen genutzt werden. Um globale Ressourcen zu schützen, wird eine Steigerung der Kühleffizienz benötigt.
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Die interne Kühlung von Turbinenschaufeln und Triebwerke senkrecht startender und landender Flugzeuge sind nur zwei von vielen Anwendungsbeispielen, bei denen Prallstrahlen genutzt werden. Um globale Ressourcen zu schützen, wird eine Steigerung der Kühleffizienz benötigt.
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On unsymmetrically impinging jets
Journal of Fluid Mechanics, 1990Two impinging two-dimensional incompressible inviscid fluid jets of known widths and velocities produce two outgoing jets. The speeds of the outgoing jets are readily determined from the Bernoulli equation. Their two widths and two directions (four quantities) are related by conservation of mass and conservation of two components of momentum (three ...
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Granular jet impingement on a fixed target
Physical Review E, 2010In this work discrete element modeling (DEM) was applied to the flow of granular jets against a target. The resulting sheetlike or conelike formations under different conditions are described and explained by means of kinetic analysis. A qualitative and quantitative comparison with experimental results [Cheng, Phys. Rev. Lett.
Huang, YJ, Chan, CK, Zamankhan, P
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