Results 61 to 70 of about 845 (133)

Numerical Study of Subsonic Hot and Near-Sonic Submerged Jets Based on a Two-Fluid Model [PDF]

Journal of Applied and Computational Mechanics
This paper discusses the hot subsonic and near-sonic axisymmetric submerged stationary jets flowing from a nozzle with a radius of 25.4 mm. The Mach number at the nozzle exit is 0.376 for a subsonic jet, and for a near-sonic jet, it is 0.985.
Zafar Malikov, Farrukh Nazarov, Sardor Khaydarov   +2 more
doaj   +1 more source

Flowfield and Noise Dynamics of Supersonic Rectangular Impinging Jets: Major versus Minor Axis Orientations

Fluids
The current study explores the flowfield and noise characteristics of an ideally expanded supersonic (Mach 1.44) rectangular jet impinging on a flat surface.
Yogesh Mehta, Vikas N. Bhargav, Rajan Kumar   +2 more
doaj   +1 more source

Experimental and Theoretical Investigations of Edge Tones in High Speed Jets

Journal of Fluid Science and Technology, 2013
Experimental and theoretical investigations of the high speed jets impinge on a wedge-shaped edge have been conducted. Sonic circular and square jets of the same hydraulic diameter are examined in the present study.
Mohammed K. IBRAHIM
doaj   +1 more source

Effects of Key Inlet Design Parameters on the Performance of Supplementary Combustion Nozzle [PDF]

Journal of Applied Fluid Mechanics
Solid rocket motors (SRMs) have limited propulsion performance due to their short fuel combustion duration and low specific impulse. The supplementary combustion nozzle (SCN) injects air into the nozzle expansion section to promote secondary combustion ...
W. Lei, Y. Li, Q. Liu, Z. Zhou
doaj   +1 more source

On the influence of the nozzle external configuration on the radiated screech and the decay of supersonic jets

Archives of Acoustics, 2016
The behaviour of screeching jets exhausting from an axisymmetric con-vergent-divergent nozzle was studied. The nozzle had a 2.9 mm throat diameter and a. 1.95 theoretical exit Mach number.
Giovanni Maria CARLOMAGNO, Carmine IANNIELLO, Paolo VIGO   +2 more
doaj  

Effects of Erosive Burning on Solid Rocket Motor Internal Ballistics [PDF]

فصلنامه علوم و فناوری فضایی, 2012
In this study, solid rocket motor internal ballistic, has been investigated. Flow field consists of internal grain space and converging-diverging nozzle. Axisymmetric, compressible and transient Euler equations have been considered as governing equations
E. Rezaeian Parsa, S. M. Mirsajedi
doaj  

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

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

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

Mechanistic Investigation of Microdroplet Formation in High-Viscosity Shear-Thinning Hydrogel Bioinks. [PDF]

Gels
Gao Q, Mi Y, Yu K, Shang Y, Lu L, Gao Y, Zhang P.   +6 more
europepmc   +1 more source