Results 341 to 350 of about 450,193 (394)
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Nozzles: Nozzle-less Devices Defined
Journal of the American Rocket Society, 1945This is a complicated, but exact way of saying that any channel (converge n t divergent, straight or convergentdivergent) through which fluids expand to convert their heat or pressure energy into velocity in a given direction is a nozzle. Since the mass of gas is given a velocity at the expense of its heat or pressure energy, it is seen that the heat ...
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Truncated Perfect Nozzles in Optimum Nozzle Design
ARS Journal, 1961A graphical technique for selecting optimum nozzle contours from a family of truncated perfect nozzles is presented which permits simultaneous consideration of various types of optima. This procedure includes the effects of friction, as well as the thermodynamic properties of the reacting gas.
D. Migdal +3 more
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Design of Wind Nozzle for Nozzle Augmented Wind Turbine
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2022In some countries, wind turbines are designed to operate at relatively high speeds to be appropriately efficient, limiting the use of wind turbines in urban areas with low wind speeds. Thus, innovation is needed to enhance the possibility of wind energy use within the range of low speeds.
Mohammed Aldhufairi +4 more
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Experimental Study of the Performance of a Rotating Detonation Engine with Nozzle
, 2016A rotating detonation engine is experimentally tested with various nozzle configurations for the purpose of measuring the propulsive performance of these devices in terms of thrust and specific impulse.
M. Fotia +3 more
semanticscholar +1 more source
, 2017
Meniscus-confined electrodeposition (MCED) is a solution-based, room temperature process for 3D printing of metals at micro/nanoscale. In this process, a meniscus (liquid bridge or capillary) between a nozzle and a substrate governs the localized ...
S. Morsali +7 more
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Meniscus-confined electrodeposition (MCED) is a solution-based, room temperature process for 3D printing of metals at micro/nanoscale. In this process, a meniscus (liquid bridge or capillary) between a nozzle and a substrate governs the localized ...
S. Morsali +7 more
semanticscholar +1 more source
AIAA Journal, 2002
A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
Pinhas Z. Bar-Yoseph +2 more
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A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
Pinhas Z. Bar-Yoseph +2 more
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Reviews of Geophysics, 1989
Sonic velocities of geologic fluids, such as volcanic magmas and geothermal fluids, can be as low as 1 m/s. Critical velocities in large rivers can be of the order of 1–10 m/s. Because velocities of fluids moving in these settings can exceed these characteristic velocities, sonic and supersonic gas flow and critical and supercritical shallow‐water flow
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Sonic velocities of geologic fluids, such as volcanic magmas and geothermal fluids, can be as low as 1 m/s. Critical velocities in large rivers can be of the order of 1–10 m/s. Because velocities of fluids moving in these settings can exceed these characteristic velocities, sonic and supersonic gas flow and critical and supercritical shallow‐water flow
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Acoustics from a rectangular supersonic nozzle exhausting over a flat surface.
Journal of the Acoustical Society of America, 2016A jet exhausting over a plate at different distances away from the nozzle was investigated to simulate jets exhausting over airframe surfaces and the jet-ground interaction during take-off and landing operations.
Pablo A. Mora +3 more
semanticscholar +1 more source
2012
Publisher Summary This chapter discusses the nozzle of a jet engine. It is the one of the primary components of a jet propulsion system. It transforms random internal energy into ordered kinetic energy to increase the momentum of the flow, thereby producing thrust.
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Publisher Summary This chapter discusses the nozzle of a jet engine. It is the one of the primary components of a jet propulsion system. It transforms random internal energy into ordered kinetic energy to increase the momentum of the flow, thereby producing thrust.
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, 2017
Several tapered- and sharp-edge nozzles with different exit diameters were used to investigate their effect on the near-field characteristics of a liquid jet injected transversely into a subsonic uniform cross airflow including a jet’s structure, column ...
M. Broumand, M. Birouk
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Several tapered- and sharp-edge nozzles with different exit diameters were used to investigate their effect on the near-field characteristics of a liquid jet injected transversely into a subsonic uniform cross airflow including a jet’s structure, column ...
M. Broumand, M. Birouk
semanticscholar +1 more source