Results 81 to 90 of about 2,268 (172)
On unidirectional flight of a free flapping wing
, 2006 International audienceWe study the dynamics of a rigid, symmetric wing that is flapped vertically in a fluid. The motion of the wing in the horizontal direction is not constrained.
Childress, Stephen +2 more
core +4 more sources
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
Nondiffracting supertoroidal pulses and optical “Kármán vortex streets”
Nature CommunicationsSupertoroidal light pulses, as space-time nonseparable electromagnetic waves, exhibit unique topological properties including skyrmionic configurations, fractal-like singularities, and energy backflow in free space, which however do not survive upon ...
Yijie Shen +2 more
doaj +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
Transition to turbulence in Taylor-Couette ferrofluidic flow [PDF]
, 2015 Y.D. was supported by Basic Science Research Program of the Ministry of Education, Science and Technology under Grant No. NRF-2013R1A1A2010067. Y.C.L. was supported by AFOSR under Grant No.
Altmeyer, Sebastien +2 more
core +2 more sources
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
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
Adaptive respiratory muscle trainer based on hybrid nanogenerator sensor and artificial intelligence
InfoMat, Volume 7, Issue 6, June 2025.We manufacture a training device for respiratory muscle resistance training, with respiratory states sensing and resistance self‐adaption. Abstract Respiratory muscle training can improve respiratory function by strengthening muscle mass, which is of great help to populations with respiratory system diseases and athletes.
Ziao Xue +8 more
wiley +1 more source
Water Resources Research, Volume 61, Issue 6, June 2025.Abstract In‐channel wood, a critical component of forested rivers, has the capacity to enhance hyporheic flow. This process facilitates the continuous exchange of gases, solutes, and nutrients across the sediment‐water interface, regulating pollutant transport and biogeochemical cycles in rivers.
S. H. Huang +3 more
wiley +1 more source
, 2002 Vortex crystals is one name in use for the subject of vortex patterns that move without change of shape or size. Most of what is known pertains to the case of arrays of parallel line vortices moving so as to produce an essentially two-dimensional flow ...
Aref, Hassan +4 more
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