نتایج جستجو برای: submerged horizontal jets

تعداد نتایج: 85459  

2012
P. S. Landa P. V. E. McClintock

We address the problem of how turbulence is created in a submerged plane jet, near to the nozzle from which it issues. We do so by making use of a WKB-like asymptotic expansion for approximate solution of a complex, linear, fourth-order differential equation describing small deviations from the steady-state stream function. The result is used as a generating solution for application of the asym...

2010
DARAN L. RIFE JAMES O. PINTO ANDREW J. MONAGHAN CHRISTOPHER A. DAVIS JOHN R. HANNAN

This study documents the global distribution and characteristics of diurnally varying low-level jets (LLJs), including their horizontal, vertical, and temporal structure, with a special emphasis on highlighting the underlying commonalities and unique qualities of the various nocturnal jets. Two tools are developed to accomplish this goal. The first is a 21-yr global reanalysis performed with th...

2011
Brady P. Drew Pavlos P. Vlachos John J. Charonko Sunghwan Jung

The entrainment process in two-phase buoyant jets differs significantly from their singlephase counterparts, and is not well understood. Entrainment models developed for singlephase flow are often used in two-phase jetting simulations, albeit with limited success. In this work, Particle Image Velocimetry (PIV) and shadowgraph flow visualization experiments have been conducted on submerged round...

2016
Jijian Lian Wenjiao Zhang Qizhong Guo Fang Liu

As flood water is discharged from a high dam, low frequency (i.e., lower than 10 Hz) noise (LFN) associated with air pulsation is generated and propagated in the surrounding areas, causing environmental problems such as vibrations of windows and doors and discomfort of residents and construction workers. To study the generation mechanisms and key influencing factors of LFN induced by energy dis...

Journal: :Journal of physics 2021

Abstract Submerged and impinging jets with harmonic perturbations added to the inlet velocity profile nozzle vibrations are simulated numerically at different Reynolds (Re) Strouhal (St) numbers by solving Navier–Stokes equations. The effects of Re, St forcing amplitudes on flow behavior jet splitting phenomena studied.

Journal: :Experimental Thermal and Fluid Science 2020

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 2002

Journal: :The Journal of the Acoustical Society of America 2013
Reid McCargar Lisa M Zurk

Deep vertical line arrays can exploit the reliable acoustic path (RAP), which provides low transmission loss (TL) for targets at moderate ranges, and increased TL for distant interferers. However, nearby surface interference also has favorable RAP propagation and cannot be separated from a submerged target without horizontal aperture. In this work, a physics-based Fourier transform variant is i...

ژورنال: علوم آب و خاک 2013
سید محمود کاشفی پور, , محمد توزنده جانی, ,

One of the usual ways to dissipate excess energy in the dam's downstream is hydraulic jump. Hydraulic jump is a rapidly varied flow, in which the flow conditions change from supercritical to sub-critical with a large amount of energy loss. In this research, a combination of two water jets in the form of overflow dam and underflow through a slot on the body of an ogee dam with the USBR standard ...

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