Results 71 to 80 of about 4,556 (210)

A scanning particle image velocimetry system for spatial mapping of steady flow and O2 concentration fields around aquatic organisms

open access: yesMethods 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

Heat transfer from the stagnation area of a heated cylinder at Re(D) = 140,000 affected by free-stream turbulence [PDF]

open access: yes, 2011
This is the post-print version of the final paper published in International Journal of Heat and Mass Transfer. The published article is available from the link below.
Ames   +12 more
core   +1 more source

Characterization of Pressure Pulsation Propagation in a Pump‐Turbine Based on the Same‐Frequency Tracking Method

open access: yesEnergy 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”

open access: yesNature Communications
Supertoroidal 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

Study the Flow behind a Semi-Circular Step Cylinder (Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics (CFD))

open access: yesEnergies, 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

The vortex street as a statistical-mechanical phenomenon [PDF]

open access: yes
An explanation of the Karman vortex street is presented on the basis of the two-temperature canonical distribution for inviscid two-dimensional flows in Navier-Stokes fluids or guiding-center ...
Montgomery, D.
core   +1 more source

Universal scaling law in drag-to-thrust wake transition of flapping foils

open access: yes, 2019
Reversed von K\'arm\'an streets are responsible for a velocity surplus in the wake of flapping foils, indicating the onset of thrust generation. However, the wake pattern cannot be predicted based solely on the flapping peak-to-peak amplitude $A$ and ...
Ganapathisubramani, B.   +2 more
core   +1 more source

Wonders of Harbor and Grey Seal Whiskers: Morphology, Natural Frequencies, and 3D Modeling

open access: yesAdvanced 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

Shock-fitted Euler solutions to shock-vortex interactions [PDF]

open access: yes
The interaction of a shock wave with a hot spot, a single vortex and a vortex street is studied within the framework of the two dimensional compressible Euler equations.
Hussaini, M. Y.   +2 more
core   +4 more sources

The effect of Turbulence Models on Numerical Prediction of Air Flow within Street Canyons [PDF]

open access: yes, 2004
November 15-17 ...
Crowther, J, Mumovic, D, Stevanovic, Z
core  

Home - About - Disclaimer - Privacy