Buscar
Mostrando ítems 31-40 de 593
Fast multipole method applied to Lagrangian simulations of vortical flows
(Elsevier B.V., 2017-10-01)
Lagrangian simulations of unsteady vortical flows are accelerated by the multi-level fast multipole method, FMM. The combination of the FMM algorithm with a discrete vortex method, DVM, is discussed for free domain and ...
3D CFD Simulation of Vortex-induced Vibration of Cylinder
(INT SOC OFFSHORE POLAR ENGINEERS, 2011)
The 3D flow around a circular cylinder free to oscillate transversely to the free stream was simulated using Computational Fluid Dynamics (CFD) and the Spalart-Allmaras Detached Eddy Simulation (DES) turbulence model for ...
Modified Taylor vortices
(American Physical Society, 2017-12)
The classic problem reported by Taylor [Philos. Mag. 46, 671 (1923)] on the viscous decay of a planar vortex grid is here extended in three ways. First we present solutions for the vortex grid modulated in the direction ...
Numerical experiments of the flow around a bluff body with and without roughness model near a moving wall
(2020-03-01)
Numerical tests at high Reynolds number flows were taken on circular cylinder placed near and parallel to a moving ground. A moving ground running at the same speed as the free stream eliminates the confusing effects of ...
Numerical simulation of vortex interactions using a fast multipole discrete particle method
(2015-01-01)
The discrete vortex method (DVM) is based on a Lagrangian description of the vorticity transport equation. In order to numerically solve the DVM, one can split the vorticity equation into separate diffusive and convective ...
NUMERICAL SIMULATION OF VORTEX INTERACTIONS USING A FAST MULTIPOLE DISCRETE PARTICLE METHOD
(Int Center Numerical Methods Engineering, 2015-01-01)
The discrete vortex method (DVM) is based on a Lagrangian description of the vorticity transport equation. In order to numerically solve the DVM, one can split the vorticity equation into separate diffusive and convective ...
Development of a new Lagrangian vortex method for evaluating effects of surfaces roughness
(2019-03-01)
The main contribution of this paper is to develop a new methodology to include effects of surface roughness on aerodynamic of bodies. The numerical approach simulates the mechanism of vortex shedding of a rough circular ...
Vortex Generation and Aeroacoustics in Asymmetric Wakes
(2015-01-01)
High-lift devices in an aircraft are important sound generators. These devices should be studied in order to further reduce overall aircraft noise. The high-lift devices operating at a high angle of attack promote the ...
Critical currents and melting temperature of a two-dimensional vortex lattice with periodic pinning
(2013-06-01)
The critical current and melting temperature of a vortex system are analyzed. Calculations are made for a two-dimensional film at finite temperature with two kinds of periodic pinning: hexagonal and Kagomé. A transport ...