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Nozzle

About: Nozzle is a research topic. Over the lifetime, 158675 publications have been published within this topic receiving 893026 citations. The topic is also known as: spout.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the triangular jet was investigated for use as a passive device to enhance fine-scale mixing and to reduce the coherence of large-scale structures in the flow.
Abstract: The triangular jet was investigated for use as a passive device to enhance fine-scale mixing and to reduce the coherence of large-scale structures in the flow. The suppression of the structures is vital to the enhancement of molecular mixing, which is important for efficient chemical reactions including combustion. The sharp corners in the jet injector introduced high instability modes into the flow via the non-symmetric mean velocity and pressure distribution around the nozzle. Both aerodynamic and hydrodynamic flows showed the difference between the flow at the corner (vertex) and at the flat side. While highly coherent structures could be generated at the flat side, the corner flow was dominated by highly turbulent small-scale eddies. The flow characteristics were tested using hotwire anemometry for mean flow and turbulence analysis, and flow visualization in air and water.

89 citations

Patent
20 Dec 1996
TL;DR: A liquid ejection apparatus includes an ejection tank disposed above a conveying path and storing an image-forming solvent, a nozzle plate provided at the ejection table as the bottom wall of the tank, and at least one actuator for moving the nozzle plate reciprocally toward and away from the image-recording material on the path.
Abstract: A liquid ejection apparatus includes an ejection tank disposed above a conveying path and storing an image-forming solvent, a nozzle plate provided at the ejection tank as a bottom wall of the ejection tank and having a plurality of nozzle holes for ejecting the image-forming solvent, and at least one actuator for moving the nozzle plate reciprocally toward and away from an image-recording material on the conveying path. As the image-forming solvent is ejected from the nozzle holes, bubbles may enter into the ejection tank by way of the nozzle holes. However, the bubbles rise in the ejection tank without remaining in vicinities of the nozzle holes. As a result, a case in which bubbles close the nozzle holes and prevent the image-forming solvent from being released from the nozzle holes is avoided. Consequently, the image-forming solvent can be uniformly applied onto the image-recording material.

89 citations

Journal ArticleDOI
Abstract: An experimental investigation is made to determine the effects of the orifice nozzle number and the inlet pressure on the heating and cooling performance of the counter flow Ranque–Hilsch vortex tube when air and oxygen used as a fluid. The orifices used at these experiments are made of the polyamide plastic material. The thermal conductivity of polyamide plastic material is 0.25 W/m °C. Five orifices with nozzle numbers of 2, 3, 4, 5 and 6 have been manufactured and used during the experiments. For each one of the orifices (nozzle numbers) when used with two different fluids, inlet pressures were adjusted from 150 kPa to 700 kPa with 50 kPa increments, and the exergy efficiency was determined. During the experiments, a vortex tube is used with an L/D ratio of 15, and cold mass fraction is held constant at 0.5. As a result of the experimental study, it is determined that the temperature gradient between the hot and cold fluid is decreased with increasing of the orifice nozzle number.

89 citations

Journal ArticleDOI
TL;DR: In this paper, the authors developed a wet steam model based on computational fluid dynamics to understand the intricate feature of the steam condensation in the supersonic ejector, and the numerical results show that the dry gas model exaggerates the expansion characteristics of the primary nozzle by 21.95%, which predicts a Mach number of 2.00 at the nozzle exit compared to 1.64 for the wet steam.

89 citations

Journal ArticleDOI
TL;DR: In this article, a review of the modeling and measurement of the transient phenomena involved in the various subsystems of the plasma spray process: jet formation, particle injection, particle heating and acceleration and coating formation.

89 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,827
20223,448
20211,700
20203,921
20195,309
20186,486