نتایج جستجو برای: jet and wake effect

تعداد نتایج: 17131105  

1998
S. Guilloteau

We present high angular resolution (down to ∼ 1.5′′) interferometric maps of the CO J = 1→0 and J = 2→1 emission in the molecular outflow associated with the extremely young HH 211 jet, which is located in the IC 348 molecular complex. At velocities close to the systemic velocity, the CO emission traces the outflow cavities, while an extremely collimated, continuous jet-like structure is observ...

2008
M. Kadler E. Ros M. Perucho Y. Y. Kovalev D. C. Homan I. Agudo K. I. Kellermann M. F. Aller

The parsec-scale radio jet of the broad-line radio galaxy 3C 111 has been monitored since 1995 as part of the 2cm Survey and MOJAVE monitoring observations conducted with the VLBA. Here, we present results from 18 epochs of VLBA observations of 3C 111 and from 18 years of radio flux density monitoring observations conducted at the University of Michigan. A major radio flux-density outburst of 3...

2016
Nathan Lauer Derrick Yeo David Snyder Derek A. Paley

The continuing development of fully autonomous aircraft requires advanced sensing and control systems in order to complete difficult tasks such as aerial refueling and close formation flight. To accomplish such maneuvers, an aircraft must be able to measure the location of nearby aircraft and position itself relative to these other flight vehicles. In visually degraded environments where vision...

2013
Sean P. Colin John H. Costello Kakani Katija Jamie Seymour Kristen Kiefer

Evolutionary constraints which limit the forces produced during bell contractions of medusae affect the overall medusan morphospace such that jet propulsion is limited to only small medusae. Cubomedusae, which often possess large prolate bells and are thought to swim via jet propulsion, appear to violate the theoretical constraints which determine the medusan morphospace. To examine propulsion ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1388

abstract : the purpose of this research is to study a bout multiple manifestations of poem music in hakim sanaee ghaznavi poems yherefore the first seetion of this book study and describes the complete works of this research about poem music love poem sanaee poem and this known and famous poets life and works the second section explained the external music of sanaee poems that for better u...

Journal: :international journal of architecture and urban development 0
djamel mestoul ph.d. candidate, laboratoire architecture et environnement (lae), ecole polytechnique d’architecture et d’urbanisme, epau, alger-algérie. rafik bensalem professor, ecole polytechnique d’architecture et d’urbanisme, epau, alger-algérie. luc adolphe professor, ecole nationale d’architecture de toulouse, toulouse, france.

in our present research, we focus on the modeling of airflow related to natural disasters, such assand accumulation, with urban form studies. the objective is to find which urban form can promote sand passing andreduce as much as possible stagnation of sand in the building area (streets, alleys, etc.). the urban form design will bediscussed through the simulation of airflow by using computation...

An axisymmetric jet issued from a sharp edged circular convergent nozzle has been studied experimentally in the near field at Reynolds number 5.3x104  to search the saddle shape behavior of mean velocity and the role of mean static pressure in the jet flow. Due to the vena contracta effect the centerline mean velocity of the jet increases about 4.2% of its exit value and corresponding decrease ...

2003
Daniel Jimenez Fabiola Leon-Velarde Jorge Osorio

Bibliography This special bibliography contains references that have been sent to us as well as citations for abstracts from scientific meetings. It is not intended to be a complete bibliography, rather it presents a sample of the work that has been done with this equipment. Abstract 320.I, pg. A173. L.F. 2003. Self-reported sleep quality and fatigue correlates with actigraphy in midlife women ...

امیدی, زهرا, صحبت زاده, فرشاد, کاشی, نوشین,

In this work, we first produced microwave plasma ball, then changed the ball into a microwave plasma jet by flowing a working gas through a nozzle. The effect of working gas on the thermal characteristics of the plasma ball and atmospheric pressure microwave plasma jet was investigated. We used resonant absorption scheme by a metallic antenna inside a chamber in which led to the ionization of s...

Journal: :Journal of Fluid Mechanics 2022

The effect of a chordwise flexible aft-tail rigid heaving aerofoil on the dynamical transitions trailing-wake is studied here. two-way coupled fluid–solid dynamics simulated using an in-house fluid–structure interaction (FSI) platform, comprising discrete forcing immersed boundary method based incompressible Navier–Stokes solver, weakly with finite difference structural solver. FSI in compariso...

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