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1-20 of 405
Keywords: Vortices
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Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2020, 142(5): 051504.
Paper No: FE-19-1744
Published Online: February 4, 2020
...Jiajia Li; Pablo M. Carrica We propose a method to visualize vortex cores based on manipulation of the pressure field produced by isolated vortices in incompressible flow. Under ideal conditions, the function D = 2 | ∇ p | / ∇ 2 p yields an approximate distance to vortex centerlines. As opposed...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021104.
Paper No: FE-17-1296
Published Online: July 10, 2018
... on the capabilities of the numerical models to simulate real egg-carton plates as the ones experimentally investigated by Giron et al. [ 14 ]. The procedure followed by this research work was as follows: The unsteady flow features, called “rolling vortices” by Giron et al. [ 14 ], are clearly unsteady...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021401.
Paper No: FE-17-1756
Published Online: June 29, 2018
... a cylinder. Computational fluid dynamics Duct LES Pressure drop Turbulence Turbulence modeling Unsteady flows Vortices Channel Pipe flows 26 11 2017 23 05 2018 Contributed by the Fluids Engineering Division of ASME for publication in the J OURNAL OF F LUIDS E...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021102.
Paper No: FE-17-1726
Published Online: June 29, 2018
... hydrodynamics Unsteady flows Vortices Wakes Fluid mechanics In the context of swimming, hydrodynamics helps us to go to the right place, at the right time, at the right cost, and in the right manner. Hydrodynamic laws give us the forces and moments produced on the platform that carry us...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021103.
Paper No: FE-18-1030
Published Online: June 29, 2018
... is 163.93 Hz, and the cavitation shedding frequency at the short side is 306.67 Hz, which is about twice the value of the former. The filtered vorticity transport equation is employed to investigate the cavitation–vortex–turbulence interaction. Results indicate that vortex stretching is the major promoter...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011205.
Paper No: FE-17-1612
Published Online: June 29, 2018
... fluid dynamics RANS simulations Rotating fluids Turbulence Turbulence modeling Unsteady flows Vortices Wakes Boundary layer flows over three-dimensional (3D) curved bodies such as an axisymmetric hill are of interest to the computational fluid dynamics (CFD) community due...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011106.
Paper No: FE-17-1562
Published Online: June 29, 2018
... NGINEERING . Manuscript received September 7, 2017; final manuscript received June 1, 2018; published online June 29, 2018. Assoc. Editor: Bart van Esch. 07 09 2017 01 06 2018 Cavitation Jets LES Multiphase flows Vortices Two-stage electrohydraulic servovalves play important...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011203.
Paper No: FE-17-1792
Published Online: June 27, 2018
... as the distribution of the tangential velocity on different axial positions, have been specifically captured and analyzed. The “strake,” “claw,” and “ivory” vortices have been newly found and defined at the initial evolution stage, and they subsequently begin to harshly wind and rotate with the primary vortex. A flow...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011101.
Paper No: FE-18-1014
Published Online: June 27, 2018
... field downstream of the pillar as reported by Belahadji et al. [ 23 ] and Ramamurthy and Balanchandar [ 33 ]. They identified three types of cavitating vortices: near-wake vortices, the primary two-dimensional Kármán vortices, and secondary three-dimensional streamwise vortices. In addition, three...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011102.
Paper No: FE-18-1019
Published Online: June 27, 2018
... configuration. Particle image velocimetry (PIV) measurements of the constructive interference cases show strong synchronized vorticity shedding in all cavities. Each cavity contribution to the total aeroacoustic source is then examined by means of Howe's analogy, and the percentage contribution of each cavity...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111105.
Paper No: FE-17-1684
Published Online: June 4, 2018
...Sabine Bonitz; Lars Larsson; Lennart Löfdahl; Simone Sebben The flow around passenger cars is characterized by many different separation structures, typically leading to vortices and areas of reversed flow. The flow phenomena in these patches show a strong interaction and the evolution of flow...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111401.
Paper No: FE-17-1011
Published Online: May 28, 2018
... with strong shed vortices. This study has so far expanded on the work by Hrynuk et al. [ 25 ] and Cheng et al. [ 26 ] by experimentally showing the existence of vortex shedding on the individual wires and analyzing the track and circulation of those vortices. However, the MTV results focused on only one...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111104.
Paper No: FE-17-1712
Published Online: May 28, 2018
... with rotating stall in SNL conditions. The results offer evidence that the rotating stall is in fact associated with an unstable vorticity distribution not associated with the runner blades themselves. References [1] REN21 , 2016 , “ Renewables 2016 Global Status Report ,” Renewable Energy Policy...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111202.
Paper No: FE-18-1007
Published Online: May 18, 2018
...-field region, where the potential core exists, the shear layer is very thin. As a result, the velocity gradient normal to the jet stream is very high resulting in large mean shear in the transverse ( ∂ U / ∂ y ) and spanwise ( ∂ U / ∂ z ) directions. Hence, the level of vorticity...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. September 2018, 140(9): 091201.
Paper No: FE-17-1632
Published Online: April 19, 2018
... Vorticity Measurements in an Excited Mixing Layer of a Plane Jet ,” Exp. Fluids , 20 ( 5 ), pp. 346 – 357 . 10.1007/BF00191016 [22] Alekseenko , S. , Markovich , D. , and Semenov , V. , 2002 , “ Turbulent Structure of a Gas-Liquid Impinging Jet ,” Fluid Dyn. , 37 ( 5 ), pp. 684...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. August 2018, 140(8): 081106.
Paper No: FE-17-1493
Published Online: April 10, 2018
... of this overflow rinsing methodology is that some of the processing fluid stagnates due to the generated vortices in the regions between the side and middle lifters which entrap some of the flushed particles that further adhere and deteriorate the surface of the wafers. In this work, the hydrodynamics of the flow...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061104.
Paper No: FE-17-1384
Published Online: March 13, 2018
... 2018 Aerodynamics Computational fluid dynamics Fluid-structure interaction Hydrodynamics LES Vortices Wind and tidal turbines work under highly turbulent conditions and are subjected to a large range of velocities and turbulence intensities compromising their survivability...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061202.
Paper No: FE-17-1448
Published Online: February 6, 2018
... 0.1956 G 1 0.4235 0.0214 0.274 1.87 0.4154 5.06% 7.10% 8.70% G 2 0.4449 0.0783 G 3 0.5232 Fig. 5 Temporal evolutions of vorticity fluctuations at St e = 0.1966, where the positive (counterclockwise) and the negative (clockwise) vorticities are represented by solid...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051102.
Paper No: FE-17-1223
Published Online: January 9, 2018
...) v = kinematic viscosity (m 2 /s) ω = vorticity (1/s) ω * = dimensionless vorticity ( b 0 ω / U s 0 ) The authors would like to thank Mr. Koji Okuda of Software Cradle Co., Ltd. for his help with the numerical simulation and Mr. Hiroaki Terakado...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051201.
Paper No: FE-17-1414
Published Online: December 26, 2017
... studies depict the flow physics at each section along with the study of helicity at the exit of inlet pipe to determine the recirculation effects. It is observed that the vortices associated with the motion of the particles are moved toward the surfaces and are more intense than the mean flow. The trends...
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