Results 71 to 80 of about 739 (180)
Stability of a vortex street of finite vortices [PDF]
, 1982 The stability of the finite-area Kármán ‘vortex street’ to two-dimensional disturbances is determined. It is shown that for vortices of finite size there exists a finite range of spacing ratio κ for which the array is stable to infinitesimal disturbances.
Schatzman, J. C., Saffman, P. G.
core
, 2022 Recent advances in geostationary imaging have enabled the derivation of high spatiotemporal‐resolution cloud‐motion winds for the study of mesoscale unsteady flows.
Bresky, Wayne +4 more
core +1 more source
Experiments on the reverse Bénard-von Kármán vortex street produced by a flapping foil
, 2006 International audienceControl of wake vortices to generate propulsive forces is the everyday task of swimming fish and other animals. Many studies on actual flapping tails and fins have been motivated looking forward to gain a better understanding of ...
Eduardo Wesfreid, José +2 more
core +1 more source
Methods in Ecology and Evolution, Volume 16, Issue 8, Page 1674-1687, August 2025.Abstract The impact of flow on aquatic organisms (and vice versa) is crucial for many aspects of their physiology and ecology, as this interaction shapes the hydrodynamic boundary layer and thereby the exchange of solutes between the organism and its surrounding environment.
Cesar O. Pacherres +3 more
wiley +1 more source
Energies, 2017 Laser Doppler Velocimetry (LDV) measurements, flow visualizations and unsteady Reynolds-Averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations have been carried out to study the turbulent wake that is formed behind a semi-circular ...
S. M. Sayeed-Bin-Asad +2 more
doaj +1 more source
Energy Science &Engineering, Volume 13, Issue 7, Page 3588-3604, July 2025.ABSTRACT Pressure pulsation is a key factor affecting the safe and stable operation of pump‐turbines. This article is based on same frequency‐tracking method on the pressure pulsation propagation characteristics of pump‐turbine during generation mode. The numerical simulation is validated by experimental study on a model pump‐turbine.
Yanpin Li +9 more
wiley +1 more source
Numerical simulation of the von Kármán vortex street
, 2007 This report deals with numerical simulation of the wake airflow behind a circular cylinder using FLUENT solver. The flow is assumed to be two–dimensional, laminar, isothermal, and incompressible. The Reynolds number ranges Re = 30÷170.
Šponiar, D.
core
Vortex flow around a pair of in-line forced oscillating tandem arranged circular cylinder
Nihon Kikai Gakkai ronbunshu, 2014 In this study, the flow features of vortex shedding from a pair of tandem arranged circular cylinders oscillating along the direction of the flow were observed by visualizing water flow experiment at the ranges of the frequency ratio f/fK=0～6.2 (28 steps)
Yoshifumi YOKOI
doaj +1 more source
Wonders of Harbor and Grey Seal Whiskers: Morphology, Natural Frequencies, and 3D Modeling
Advanced Science, Volume 12, Issue 23, June 20, 2025.Seals detect prey by sensing vortices using whiskers. How whisker morphologies and locations respond to hydrodynamic signals across various frequencies remains unclear. This study measures whiskers’ natural frequencies and morphologies and maps them to whisker locations on the muzzle, providing insights into how seals interpret hydrodynamic signals ...
Xingwen Zheng +4 more
wiley +1 more source
Effect of leading and secondary vortices on the propulsion performance of an undulating swimmer in the periodic vortex street [PDF]
Aquatic animals have evolved diverse swimming techniques. They have demonstrated abilities to harness energy from vortices, particularly the Kármán vortex street, resulting in enhanced thrust.
Jia, Laibing +4 more
core +1 more source