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Keywords: vortices
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Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Fluids Eng. September 2024, 146(9): 090801.
Paper No: FE-23-1438
Published Online: April 12, 2024
... designs. e-mail:  umang174351003@iitg.ac.in 1 Corresponding author. e-mail:  saha@iitg.ac.in e-mail:  vinayak@iitg.ac.in 02 10 2023 01 02 2024 12 04 2024 vertical-axis wind turbines bioinspiration aerodynamics hydrodynamics lift drag vortices...
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011205.
Paper No: FE-17-1612
Published Online: June 29, 2018
.... Assoc. Editor: Sergio Pirozzoli. 26 09 2017 28 05 2018 Boundary layers Computational fluid dynamics RANS simulations Rotating fluids Turbulence Turbulence modeling Unsteady flows Vortices Wakes Boundary layer flows over three-dimensional (3D) curved bodies...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011106.
Paper No: FE-17-1562
Published Online: June 29, 2018
... Vortices Two-stage electrohydraulic servovalves play important roles in most modern hydraulic servocontrol systems for flight wing controls, manufacturing robots, automobiles, and so on. The light weight, compactness, and fast dynamic response of two-stage servovalves significantly attract...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021401.
Paper No: FE-17-1756
Published Online: June 29, 2018
... with the contour of normalized pressure To visualize coherent structures in the flow, the Lambda-2 ( λ 2 ) vortex criterion is calculated from an instantaneous flow field [ 32 ]. Figure 23 shows the motion of the vortices when λ 2 is −1.0 × 10 6 s −2 , and on these isosurfaces, the normalized...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021102.
Paper No: FE-17-1726
Published Online: June 29, 2018
...; distribution is unlimited. Use license CC-BY 4.0. 09 11 2017 18 05 2018 Drag Experimental techniques Flows in biological systems Fluid-structure interaction Hydrodynamics Measurement techniques Naval hydrodynamics Unsteady flows Vortices Wakes Fluid mechanics...
Journal Articles
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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
Publisher: ASME
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. 1 Corresponding author. Contributed by the Fluids Engineering Division of ASME for publication in the J OURNAL OF F LUIDS E NGINEERING . Manuscript received January 4, 2017; final manuscript received April 3, 2018; published online May 28, 2018. Assoc. Editor: Samuel...
Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111202.
Paper No: FE-18-1007
Published Online: May 18, 2018
... of the triangular jets, swirling strength analysis was performed. This analysis provides information on the location of vortices, their induced rotational motion and strength, and is fully explained in Ref. [ 26 ]. In this analysis, first the interrogation areas (IAs) with nonzero rotational (swirling) motion were...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. September 2018, 140(9): 091201.
Paper No: FE-17-1632
Published Online: April 19, 2018
...  < 1.5) as a function of downstream z / W distance for all test cases Phase-locked vorticity fields are obtained by taking the curl of the velocity data obtained by the PIV. Each phase of the velocity fields consisted of an ensemble average of 200 vector fields. The laser and camera were...
Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061104.
Paper No: FE-17-1384
Published Online: March 13, 2018
... 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, specifically from a structural integrity and a service...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061202.
Paper No: FE-17-1448
Published Online: February 6, 2018
..., 2018. Assoc. Editor: Riccardo Mereu. 25 07 2017 02 01 2018 Free surface flows Lift Vortices Wakes Waves Flow past a circular cylinder close to a free surface has been studied in many applications of pipelines, offshore structures, and tidal power plants. The existence...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051102.
Paper No: FE-17-1223
Published Online: January 9, 2018
...  = 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 of Kogakuin University for his help in conducting...