Results 371 to 380 of about 438,680 (418)
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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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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
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
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AIAA Journal, 1998
During the sea-level ignition process of rocket motors, the nozzle is subjected to an overexpanded e ow condition that can cause high side loads. Prediction of the symmetrical separation location is the e rst key step to a determination of the range of possible side-load magnitudes.
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During the sea-level ignition process of rocket motors, the nozzle is subjected to an overexpanded e ow condition that can cause high side loads. Prediction of the symmetrical separation location is the e rst key step to a determination of the range of possible side-load magnitudes.
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American Industrial Hygiene Association Journal, 1975
A mathematical model is proposed to describe the sampling bias in anisokinetic sampling of aerosols. The nozzle sampling bias is described as a function of the particle's free stream inertial parameter, P, and the particle's free stream Reynolds number, Re0, and the suction ratio, w0, of the sampling nozzle.
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A mathematical model is proposed to describe the sampling bias in anisokinetic sampling of aerosols. The nozzle sampling bias is described as a function of the particle's free stream inertial parameter, P, and the particle's free stream Reynolds number, Re0, and the suction ratio, w0, of the sampling nozzle.
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The Journal of the Science of Food and Agriculture, 2016
BACKGROUND Recently, ultrasonic nozzle technology has been applied in spray-drying because of its numerous advantages, including providing more uniform droplets and reducing damage observed in bioactive compounds.
Feyza Tatar Turan +4 more
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BACKGROUND Recently, ultrasonic nozzle technology has been applied in spray-drying because of its numerous advantages, including providing more uniform droplets and reducing damage observed in bioactive compounds.
Feyza Tatar Turan +4 more
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The Calorimeter Nozzle Programme
38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2002When investigating flow phenomena in rocket nozzles, e.g. flow separation and side-load behavior for different nozzle concepts, or when experimentally screening design considerations for advanced nozzle concepts, the initial experimental effort is generally limited to subscale experiments with high quality diagnostics.
Hagemann, G. +6 more
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Ariane 5 Performance Optimization Using Dual-Bell Nozzle Extension
, 2016To evaluate the impact of dual-bell nozzles on the payload mass delivered into geostationary transfer orbit by Ariane 5 Evolution Cryotechnique Type A (ECA), detailed studies were conducted.
R. Stark +3 more
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Journal of Ship Research, 1957
The paper deals with the vortex system of the "screw + nozzle" propeller. The results obtained from systematic experiments with propellers in nozzles in which the length-diameter ratio of the nozzle, the number of blades, and the blade-area ratio of the propeller have been varied are discussed.
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The paper deals with the vortex system of the "screw + nozzle" propeller. The results obtained from systematic experiments with propellers in nozzles in which the length-diameter ratio of the nozzle, the number of blades, and the blade-area ratio of the propeller have been varied are discussed.
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