نتایج جستجو برای: base flow separation

تعداد نتایج: 840176  

Journal: :The Journal of the Acoustical Society of America 2008
Zhaoyan Zhang

The influence of flow separation location on eigenmode synchronization and phonation onset was investigated in a two-dimensional, aeroelastic, continuum model of phonation. A linear stability analysis showed that flow separation played a critical role in initiating eigenmode synchronization and phonation. For a given glottal configuration, a small variation in the flow separation location along...

2016
Hyungkook Jeon Youngkyu Kim Geunbae Lim

In this paper, we introduce pressure-driven flow-induced miniaturizing free-flow electrophoresis (PDF-induced μ-FFE), a novel continuous separation method. In our separation system, the external flow and electric field are applied to particles, such that particle movement is affected by pressure-driven flow, electroosmosis, and electrophoresis. We then analyzed the hydrodynamic drag force and e...

Journal: :مکانیک سیالات و آیرودینامیک 0
مهدی یادگاری سید آرش سید شمس طالقانی

shock formation due to flow compressibility and its interaction with boundary layer has inappropriate effects, such as drag increase and flow separation. many methods have been proposed for reduction of these effects, such as vortex generator, suction, and blowing. this paper numerically studies the problem of flow control for naca0012 airfoil with porous media at transonic flow. porous media, ...

Mehdi Pourafshari Chenar Mohammad Soltanieh Mojtaba Shariati Niasar Sara Farhangi

It is several decades that the application of membrane processes for gas separation has become a great concern within industries. Among them, the polymeric membranes of different structures have played the most important role. Such application has been widely extended to gas separation and due to the necessity of both; prediction of the behavior of these processes and recognition of the effecti...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
mohammad nader lotfollahi

a procedure is presented that synthesizes fractional crystallization separation processes to obtain pure solids from multi-component solutions. the method includes a procedure to generate a network flow model to identify alternative process designs for fractional crystallization. the main advantage of this systematic procedure with respect to other reported procedures is using non-equilibrium s...

  In this study, fluid flow and energy separation in a micro-scale Ranque-HilschVortex Tube are numerically investigated. The flow is assumed as 2D, steady,compressible ideal gas, and shear-stress-transport SST k-W is found to be a bestchoice for modeling of turbulence phenomena. The results are in a good agreementwith the experimental results reported in the literature. The results show that f...

Journal: :CoRR 2011
Chenda Liao Harshavardhan Chenji Prabir Barooah Radu Stoleru Tamás Kalmár-Nagy

In this paper we consider the problem of monitoring detecting separation of agents from a base station in robotic and sensor networks. Such separation can be caused by mobility and/or failure of the agents. While separation/cut detection may be performed by passing messages between a node and the base in static networks, such a solution is impractical for networks with high mobility, since rout...

Journal: :تحقیقات مهندسی کشاورزی 0
سعید گوهری استادیار گروه مهندسی آب دانشگاه بوعلی سینا سیدعلی ایوب زاده دانشیار گروه مهندسی سازه های آبی دانشگاه تربیت مدرس مسعود قدسیان استاد گروه مهندسی عمران دانشگاه تربیت مدرس سیدعلی اکبر صالحی نیشابوری استاد گروه مهندسی عمران دانشگاه تربیت مدرس

flow passing through lateral intakes and channel junctions is turbulent. sediment flow and bed forms areaffected by these flow patterns and vice versa. in this research, a laboratory study was carried out toexplore a possible method for sediment control for a set of submerged vanes and a single spur dikesimultaneously. since a larger portion of the near-bed flow was diverted, the intake receive...

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