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Synthesis and spatial evolution of longitudinal coherence vortex
SPIE Proceedings, 2005By controlling the irradiance of an extended quasi-monochromatic, spatially incoherent source with a spatial light modulator, we generated a special optical field that exhibits a high degree of coherence with phase singularities for a specific pair of points at specified locations along the axis of beam propagation.
Wei Wang +4 more
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Longitudinal vortex control — techniques and applications
The Aeronautical Journal, 1992AbstractLongitudinal vortices have tremendous practical utility for flow control (control by vortices) and in some cases have exhibited tremendous potential for causing harm if uncontrolled (i.e. control of vortices is required). Vortex control has thus far been carried out via multitudinous approaches in an empirical fashion, aided by the essentially ...
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A longitudinal vortex wind turbine: Numerical study
Journal of Wind Engineering and Industrial Aerodynamics, 2018Abstract The longitudinal vortex wind turbine (LV-WT) is a new windmill concept which uses circular cylinders as the turbine blades and not Magnus rotors. The driving force is produced by the longitudinal vortex (LV). A ring-shaped plate is installed behind the circular blades for employing the LV.
Withun Hemsuwan +3 more
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Turbulence Receptivity of Longitudinal Vortex-Dominated Flows
2009The transient effect of turbulence forcing on an isolated vortex has been investigated by means of Large Eddy simulation. A dynamicmixed model is used to relate resolved and subgrid scale fluctuations in an incompressible CFD code. The initial condition is an Oseen vortex developing in a periodic box and subsequently forced by a superimposed turbulence.
C. Moldoveanu +2 more
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A numerical study of longitudinal vortex interaction with a boundarylayer
21st Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1990A numerical study of vortex generator aerodynamics has been carried out with a reduced set of Navier-Stokes equations. These are used to model the physical process of longitudinal vortex interaction with a turbulent boundary layer on a flat plate in incompressible flow.
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Performance Analysis for Elliptical Tube Longitudinal Vortex Generators
Advanced Materials Research, 2011In this paper, three-dimensional numerical simulation is conducted on the flow and heat transfer process for elliptical tube heat exchanger with rectangular vortex generators and triangular vortex generator by Fluent software, respectively, and the performance for elliptical tube heat exchanger with plate fin is compared.
Jun Jie Zhou +4 more
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Turbulence measurements of a longitudinal vortex in a turbulent boundary layer
35th Aerospace Sciences Meeting and Exhibit, 1997The Reynolds stress development of a turbulent flow field including a longitudinal vortex in a flat plate boundary layer was examined in a wind tunnel experiment. The vortex was produced through interaction between a round jet and a turbulent boundary layer.
X. Zhang +3 more
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Longitudinal Response of an Aircraft due to a Trailing Vortex Pair
Journal of Aircraft, 1973ofoils and Wings," Transonic Aerodynamics, AGARD Conference Proceedings 35, 1968, pp. 11-1 to 11-23. Mager, A., "On the Model of the Free, Shock-Separated, Turbulent Boundary Layer," Journal of the Aeronautical Sciences, Vol. 23, Feb. 1956, pp. 181-184. Smith, D.
A. Ramirez, B. M. Rao, A. E. Cronk
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Experimental analysis of longitudinal vortex dynamics
AIAA AVIATION 2022 Forum, 2022Rathje, Nils +5 more
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The Proceedings of Conference of Chugoku-Shikoku Branch, 2017
Keita YANO, Shigeru OGAWA
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Keita YANO, Shigeru OGAWA
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