... cross-flow direction numerical simulation coefficient circular cylinder vortex evolution kc 6 time series oscillatory flow vortex displacement numerical investigation cylinder motion regime upstream oil & gas Numerical Investigations of Vortex-Induced Vibration of Two-Dimensional...

... cylinder. A typical phenomenon observed in the VIV of a circular cylinder is lock-in, characterized by the synchronization of vortex shedding frequency which synchronizes with the frequency of body oscillation (Williamson and Govardhan, 2004). Comprehensive investigations have been carried out in various...

... coefficients and Keulegan-Carpenter number. Similarity, Koterayama (1984) studied the hydrodynamic forces and coefficients of a submerged circular cylinder moving forward with a constant velocity in regular waves. With advances in computational resources, Computational Fluid Dynamics (CFD) modelling has drawn...

... ABSTRACT In this paper, a circular cylinder attached by a pair of fin-shaped strips is proposed with intent to harvest hydrokinetic energy. It is found via numerical simulations of fluid-structure interaction that vortex-induced vibration and galloping occur back-to-back by placing the strips...

...) studied wave radiation and diffraction problems for a two-dimensional submerged circular cylinder in frequency domain. Wu and Eatock Taylor (1990) developed a new mathematical formulation based on a perturbation series in terms of forward speed and the hydrodynamic force can be directly obtained without...

... as the representative dimension of the system to calculate the reduced velocity, the lock-in regime is narrower that of a single cylinder. Introduction Vortex-induced vibration of a circular cylinder has been studied extensively due to its engineering significance. It is well known that the vortex shedding frequency...

... Abstract The flow around a circular cylinder at Reynolds numbers near the drag crisis was numerically simulated based on a dynamic Smagorinsky Large Eddy Simulation (LES) model at two Reynolds of Re = 1.0 × 10 5 and 6.0 × 10 5 . The flow structures and the hydrodynamic force on the cylinder...

... circular cylinder shear flow hydrodynamic property arrangement uniform flow gap ratio Effect of Tripping Wires on the Hydrodynamics of a Circular Cylinder in Uniform and Shear Flows Chengwang Lei Taylor Weston and Kieran Dawson School of Civil Engineering, The University of Sydney Sydney, New...

... and currents can approach the structures obliquely. In these cases, the fluid velocity in the axial direction of the structure is not negligible, which may have profound effect on the vortex instability and force characteristics of the structure. For a yawed circular cylinder in steady current, it has been...

... (represented by a circular cylinder) laid on an uneven seabed, mimicking a situation where the pipeline is partially embedded at certain locations, while free spanned at other locations. In the present numerical simulations, the circular cylinder has a diameter of D and a length of 9D, with seven sections...

... Abstract The three-dimensional effect of flow past bluff body poses difficult problems for simulation. The work here focuses on using high resolution TVD (total variation diminishing) numerical scheme to simulate the case of flow around a wall-mounted three-dimensional circular cylinder...

... was actualized by specifying velocity at the inlet and applying momentum loss as wave damper at the end of the wave tank. Volume-Of-Fluid (VOF) scheme was adopted to capture the air-water interface. Accuracy validation of numerical wave tank with truncated vertical circular cylinder had been accomplished...

... based incident waves. numerical simulation euler equation circular cylinder equation wave-body interaction reservoir simulation experimental data interface slope 1 16 discretization diffraction problem computation cylinder upstream oil & gas cip-based method dam-breaking...

... responses give rise to oscillatory stress, which can cause unacceptable fatigue in pipeline. The VIV of submarine pipeline span is a complicated problem involving both the fluid structure interaction and the pipe-seabed- interaction. The VIV of circular cylinders had been investigated in the last three...

... ABSTRACT: Flow control that attached different sized control rods to the rearward stagnation point of a circular cylinder was carried out in a circulating water channel by PIV technique. Reynolds numbers varied from Re≒5,000, 10,000, 15,000, 20,000 to 25,000 based on the main circular cylinder...

... ABSTRACT: The present paper is addressed to evaluate the hydrodynamic forces and motions experienced by two flexible circular cylinders in staggered arrays which are towed in still water. The cylinders were submerged partially into the still water from a towing carriage as hanging-off vertical...

... boussinesq equation free surface time series madsen equation cylinder reservoir simulation incoming wave mach reflection circular cylinder upstream stagnation point boundary Numerical Simulation of Non-linear Wave Interaction with an Offshore Wind Turbine Foundation Qiuhua Liang1a, Jun Zang1...

... ABSTRACT: The flow field around a horizontal circular cylinder in two-dimensional regular water waves is simulated by a finite-difference method based on the Navier - Stokes equations. The numerical simulations are carried out at the intermediate Keulegan- Carpenter number 1 to 3...