Results 211 to 220 of about 8,199 (263)
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Vortex dynamics and heat transfer of longitudinal vortex generators in a rectangular channel
International Journal of Heat and Mass Transfer, 2019Abstract This paper reports a numerical investigation of fluid flow and heat transfer in a rectangular channel with delta-shaped winglet longitudinal vortex generators (LVGs) under different configurations. In addition to the conventional common-flow-down configuration and the common-flow-up configuration, a unique mixed configuration is suggested ...
Sheng Wang, Kuojiang Li, Zhaoqing Ke
exaly +2 more sources
Fluid mixing in a microchannel with longitudinal vortex generators
Chemical Engineering Journal, 2014Abstract A heat transfer enhancement technique based on longitudinal vortex generators (LVGs) has been well established for large-scale heat exchangers. Motivated by the success of the LVGs, this paper is intended as an investigation of micromixers based on the T-shaped channel with rectangular winglet pairs (RWPs) mounted on the bottom of the main ...
Kai-Yo Hsiao, Chih-Yang Wu, Yi-Tun Huang
exaly +2 more sources
Dual Coaxial Longitudinal Polarization Vortex Structures
Physical Review Letters, 2020Carrying orbital angular momentum per photon, the optical vortex has elicited widespread interest. Here, we demonstrate that dual coaxial longitudinal polarization vortices can appear upon a nonparaxial propagation of a tightly focused Pancharatnam-Berry tailored Laguerre-Gaussian beam. Most importantly, it is capable of accessing arbitrary independent
Man, Z. (author) +4 more
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Interaction of Longitudinal Vortex with Horseshoe Vortex Configuration Effect of Longitudinal Vortex
39th AIAA Fluid Dynamics Conference, 2009A horseshoe vortex at a wing-body junction introduces the reduction of wing performance. A vortex generator is effective for the performance improvement. The interaction of the longitudinal vortex with the horseshoe vortex is strongly affected by the configuration of the longitudinal vortex. In this study, we carried out the experiments under different
Masaharu Andoh +2 more
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Longitudinal disordering of vortex lattices in anisotropic superconductors
Physical Review B, 1993Vortex disordering in superconducting crystals is shown to be markedly sensitive to penetration-depth anisotropy. At low temperature and high magnetic field, the muon-spin-rotation spectra for the highly anisotropic Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8+[delta]] material are found to be anomalously narrow and symmetric about the applied field, in a ...
, Harshman +6 more
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Periodic Behavior of Longitudinal Vortex Pair by Active Vortex Generator
4th Flow Control Conference, 2008The present paper describes dynamic interaction based on the phase averaged characteristics of the longitudinal vortices downstream of several pairs of active vortex generators with controlled the angle of attack in the turbulent boundary layer. The objective is to clarify experimentally how the vortex configurations have an effect on circulation and ...
Hirokazu Hattori +2 more
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Longitudinal vortex structures in a cylinder wake
Physics of Fluids, 1994This paper presents the velocity field of the longitudinal vortices found in the wake of a circular cylinder, as measured using digital particle image velocimetry (PIV). Vorticity and circulation of the longitudinal vortices are presented, based on instantaneous velocity distributions in a transverse plane behind the cylinder.
J. Wu +4 more
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The Interaction Between Horseshoe Vortex and Longitudinal Vortices From the Vortex Generators
Volume 7: Turbomachinery, Parts A, B, and C, 2010A horseshoe vortex at the blade-endwall junction introduces the reduction of turbine blade performance due to the three dimensional separation near the stagnation point of the blade and the interaction of the two legs of the horseshoe vortex in the turbine cascade passage.
Masaharu Andoh +2 more
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Effect of Actuating Mode in Active Vortex Generators on the Behavior of Longitudinal Vortex Pair
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009Effect of actuating mode of a pair of active-vortex generators (AVG) was investigated in three modes in combinations with solid and active modes under co-rotating configuration. The measurements of three components of velocity were made by using a rotating X-type hotwire anemometer.
Yuki Honda +3 more
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Aerodynamic Sound Identification of Longitudinal Vortex System
2021Longitudinal vortex generated around automobiles and airplanes is reproduced by a delta wing with attack angle of 15°, which was merged in the uniform flow at 10 m/s. The paper aims to clarify the sound source of the longitudinal vortex system. The beamforming technique was applied to identify the sound sources of the vortex system in the JAXA (Japan ...
Shigeru Ogawa +6 more
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