Results 101 to 110 of about 18,062 (227)

Impact of Lens Angle and Nozzle Geometry on Aerodynamic Focusing: A Numerical Study

Atmosphere
Straight-edge thin plate orifices (90° half-angle) are used as the focusing elements in most aerodynamic lenses. They are simple to fabricate and have fewer boundary-layer effects as compared to other geometries, such as capillaries and converging and ...
Apolo Vannavong, Harrison Griffin, Xiaoliang Wang, Mustafa Hadj-Nacer   +3 more
doaj   +1 more source

Modern developments in shear flow control with swirl [PDF]

Passive and active control of swirling turbulent jets is experimentally investigated. Initial swirl distribution is shown to dominate the free jet evolution in the passive mode.
Farokhi, Saeed, Taghavi, R.
core   +1 more source

Convergent-divergent nozzle flows [PDF]

Uniform two-zone perfect gas expansions in convergent-divergent ...
Kliegel, J. R., Quan, V.
core   +1 more source

3D analysis of gas flow behavior and particle acceleration characteristics in cold spray additive manufacturing based on non-axisymmetric numerical models

Journal of Materials Research and Technology
Cold spraying has been recognized as a promising additive manufacturing technology due to its inherent characteristics of solid-state and high deposition rate.
Wenpeng Wan, Wenya Li, Dong Wu, Zhengmao Zhang, Bo Ning   +4 more
doaj   +1 more source

Effect of nozzle and vertical-tail variables on the performance of a 3-surface F-15 model at transonic Mach numbers [PDF]

An investigation was conducted in the Langley 16 foot transonic tunnel to determine the longitudinal aerodynamic characteristics of twin two dimensional nozzles and twin baseline axisymmetric nozzles installed on a fully metric 0.047 scale model of the F-
Bare, E. A., Pendergraft, O. C., Jr.
core   +1 more source

A survey of the broadband shock associated noise prediction methods [PDF]

Several different prediction methods to estimate the broadband shock associated noise of a supersonic jet are introduced and compared with experimental data at various test conditions.
Khavaran, Abbas, Kim, Chan M., Krejsa, Eugene A.   +2 more
core   +1 more source

Large-scale turbulent structures in jets and in flows over cavities and their relationship to entrainment and mixing [PDF]

, 1979
Large scale structures in jets and in flows over cavities were investigated experimentally to determine their role in entrainment, mixing, and noise production.
Massier, P. F., Sarohia, V.
core   +1 more source

Design of optimized three-dimensional thrust nozzle contours [PDF]

Design of optimized three-dimensional thrust nozzle ...
Murthy, S. N. B., Thompson, H. D.
core   +1 more source

Two dimensional wedge/translating shroud nozzle [PDF]

, 1978
A jet propulsion exhaust nozzle is reported for multi-engine installations which produces high internal/external, thrust-minus-drag, performance for transonic cruise or transonic acceleration as well as improved performance at subsonic and supersonic ...
Maiden, D. L.
core   +1 more source

Research of a Novel Non-Axisymmetric Side-Compressed Variable Polarity Plasma Arc and Its Pressure Distribution Characteristics

Metals
In the keyhole variable polarity plasma arc weldng (VPPAW) process at horizontal position, the metal driven by gravity gathered on one side of the molten pool, and the weld formation is difficult, especially for thick workpiece welding.
Hongxing Zhao, Chunli Yang, Chenglei Fan
doaj   +1 more source