Results 61 to 70 of about 464 (173)

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

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, Tord Staffan Lundström, Anders Gustav Andersson   +2 more
doaj   +1 more source

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

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, Amin A. Huber, Swathi Murthy, Michael Kühl   +3 more
wiley   +1 more source

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

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, Pengcheng Hao, Zichao Zhang, Lihong Zhang, Huayang Hai, Hengxiang Zhang, Xikun Wang, Jiarui Wang, Zipu Zhao, Peijie Peng   +9 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

Kármán Vortex Street Driven Membrane Triboelectric Nanogenerator for Enhanced Ultra-Low Speed Wind Energy Harvesting and Active Gas Flow Sensing. [PDF]

ACS Appl Mater Interfaces, 2022
Li W, Lu L, Fu X, Zhang C, Loos K, Pei Y.   +5 more
europepmc   +1 more source

Enhancing Kármán Vortex Street Detection via Auxiliary Networks Incorporating Key Atmospheric Parameters

Atmosphere
Kármán vortex streets are quintessential phenomena in fluid dynamics, manifested by the periodic shedding of vortices as airflow interacts with obstacles.
Yihan Zhang, Zhi Zhang, Qiao Su, Chaoyue Wu, Yuqi Zhang, Daoyi Chen   +5 more
doaj   +1 more source

Large Eddy Simulation of Flow over Wavy Cylinders with Different Twisted Angles at a Subcritical Reynolds Number

Journal of Marine Science and Engineering, 2019
The deformation of the cylinder has been proved to greatly reduce the fluctuation of lift and the vortex-induced vibration. In this article, a new form of deformation mode for the smooth cylinder is proposed in order to reduce the vortex-induced ...
Chunyu Guo, Hang Guo, Jian Hu, Kewei Song, Weipeng Zhang, Wei Wang   +5 more
doaj   +1 more source

SWIMMING AGAINST THE FLOW: A ROBOTICS SIMULATION FRAMEWORK

Investigación & Desarrollo, 2016
Fish in nature take advantage of some types of turbulence and even generate it to swim with a minimum expenditure of energy. This is the case observed in rainbow trout swimming against the flow in well patterned turbulence phenomenon called Karman Street.
S. Cecilia Tapia Siles, Ryad Chellali
doaj  

Crystallization and Motility-Induced Phase Separation in the Flow of Active Brownian Particles Around an Obstacle [PDF]

EPJ Web of Conferences
The interaction between fluid flow and obstacles is a fundamental problem in fluid dynamics, exemplified by the Kármán vortex street and its Reynolds number-dependent instabilities.
Iwase Koji, Isobe Masaharu
doaj   +1 more source

INVESTIGATION OF THE FORMATION OF KARMAN VORTEX STREETS IN HYDRODYNAMICS

Theoretical & Applied Science, 2023
Denis Chemezov, Nikita Afanasyev, Andrey Kovalyov, Dmitriy Sevrikov, Nikita Maksimovskiy, Dmitriy Smirnov, Aleksandr Cheryomushkin   +6 more
openaire   +1 more source