Results 21 to 30 of about 739 (180)
Numerical Study of the Passive Motion of Airfoils in Porous Media [PDF]
Journal of Applied Fluid MechanicsThis study proposes adding a porous medium layer to the leading edge of a rigid airfoil and investigates the influence of various porous medium properties on the passive propulsion performance of the airfoil in a Kármán vortex street, using numerical ...
J. Tang +4 more
doaj +1 more source
Effect of NACA0012 Airfoil Pitching Oscillation on Flow Past a Cylinder
Energies, 2021 The flow past a cylinder is a classical problem in flow physics. In a certain range of Reynolds number, there will be Karman vortex street phenomenon in the wake of a cylinder, which will greatly increase the pressure drag of the cylinder. By controlling
Rong Han +3 more
doaj +1 more source
Topological fluid mechanics of the formation of the Kármán-vortex street [PDF]
, 2017 We explore the two-dimensional flow around a circular cylinder with the aim of elucidating the changes in the topology of the vorticity field that lead to the formation of the Kármán vortex street. Specifically, we analyse the formation and disappearance
Brøns, Morten +5 more
core +1 more source
Numerical Investigation on the Effect of Asymmetry of Flow Velocity on the Wake Vortex of Hydrofoils
Journal of Marine Science and Engineering, 2022 The Karman vortex street is a common flow phenomenon. In hydraulic machinery, it is usually located downstream of the guide vanes and the runner blades, which reduces hydraulic performance and may also cause fatigue damage to the structure.
Xiang Xia +5 more
doaj +1 more source
Simulation of incompressible viscous flow using finite element method [PDF]
E3S Web of Conferences, 2023 This study focused on simulating incompressible viscous flow using the finite element method. This study used velocity and pressure as unknowns known as primitive variable formulations.
Dewanto Gamaliel +3 more
doaj +1 more source
Journal of Fluid Science and Technology, 2007 This paper describes an experimental investigation of the transitional mechanism of a wake generated behind a thin airfoil with a small angle of attack in a towing wind tunnel.
Toshiyuki MORITA, Hiroshi MAEKAWA
doaj +1 more source
Inhomogeneous dominance patterns of competing phytoplankton groups in the wake of an island [PDF]
Nonlinear Processes in Geophysics, 2010 We investigate the competition between two different functional groups of phytoplankton in the wake of an island close to a coastal upwelling region. We couple a simple biological model with three trophic levels and a hydrodynamic model of a von Kármán ...
D. Bastine, U. Feudel
doaj +1 more source
Cross-Platform GPU-Based Implementation of Lattice Boltzmann Method Solver Using ArrayFire Library
Mathematics, 2021 This paper deals with the design and implementation of cross-platform, D2Q9-BGK and D3Q27-MRT, lattice Boltzmann method solver for 2D and 3D flows developed with ArrayFire library for high-performance computing.
Michal Takáč, Ivo Petráš
doaj +1 more source
Vortex decay in the Kármán eddy street
, 2010 In this paper, we analyze the effect of viscosity on the vorticity distribution and its rate of decay in the Kármán vortex street behind a circular cylinder.
Ponta, Fernando L., Fernando L. Ponta
core +1 more source
A numerical study of an inline oscillating cylinder in a free stream [PDF]
, 2011 Simulations of a cylinder undergoing externally controlled sinusoidal oscillations in the free stream direction have been performed. The frequency of oscillation was kept equal to the vortex shedding frequency from a fixed cylinder, while the amplitude ...
Leontini, Justin S. +5 more
core +1 more source