... renewable energy cylinder vortex-induced vibration grid frequency submerged oscillating circular cylinder numerical investigation equation reservoir simulation circular cylinder transverse williamson upstream oil & gas displacement vibration flow direction & williamson...

... common phenomena in many physical fields, whose mathematical models are represented by partial differential equations that includes both spatial and temporal derivatives to describe evolution of a physical field over time and space. Hughes and Williamson at el. (2019) study the equivalence between wave...

... in the comprehensive reviews (Bearman, 2011; Gabbai and Benaroya, 2005; Williamson and Govardhan, 2004, 2008). As reduced velocity increase, initial, upper and lower branches have been observed in the oscillation amplitude response for VIV of a smooth cylinder at low values of the mass–damping (Khalak and Williamson...

.... When the oscillation frequency of the cylinder matches the frequency of the periodic wake vortex shedding (Khalak and Williamson, 1999), it will cause resonance, which is called the synchronization range (lock-in). The lock-in of VIV may cause a catastrophic failure of the structure. Comprehensive...

... of oscillatory flow, and diameter of the cylinder, respectively. The Reynolds number is defined as Re = U' m D/v', where v is the fluid kinematic viscosity. The Stokes number β is dependent on the Re and KC as β = Re/KC. Williamson (1985b) experimentally examined the relationship between the motion...

... govardhan synchronization williamson An effective time-domain approach for prediction of vortex-induced vibrations in a 2D plane Wei Lin, Cheng Su * Department of Civil Engineering, South China University of Technology Guangzhou, China ABSTRACT Although there are a great many researches on vortex...

... in transverse direction from the center of cylinder to few diameter distances through mean flow field profiles. ocean engineering circular cylinder stationary cylinder production monitoring numerical simulation upstream oil & gas history williamson roshko equation engineering simulation...

... of the benchmarking experiment conducted by Khalak and Williamson (1996). The beating phenomenon in initial branch is supported by two peak in FFT analysis. One difference in the response of cylinder between present study and experiment results from the system's tendency to keep its earlier state. The intermittent...

... streamwise williamson Vortex-Induced Vibration (VIV) On Circular Cylinder With Offset Angle Hendrik Hans Jianmin Miao*, Michael Triantafyllou * School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore # Center for Environmental Sensing and Modeling, Singapore-MIT...

.... This critical point appears to be governed by the force moment ratio rather than the mass moment of inertia ratio. In the present study, a critical force moment ratio of 0.512 ± 0.002 was determined as the onset point for the infinite VIV lock-in regime. williamson govardhan critical mass ratio...

... results obtained from literature are presented in this paper. Case studies demonstrated the difference in VIV behaviour between a Sevan FPSO and a classic spar. aspect ratio cylindrical structure experiment 1 frequency vibration frequency 0 williamson amplitude mechanics fpso vortex...

...). Combined IL and CF VIVs were studied experimentally at MIT (Dahl, 2008) and NTNU (Yin, 2013), and simulated by FLUENT at NTNU (Yin, 2013). The basic mechanism of VIVs is well-known (e.g., Blevins, 1990; Williamson and Govardhan, 2004; 2008). The shedding of vortices from cylindrical bluff objects...

... response gulfstar standard floater floating production system strake configuration williamson cylinder coefficient subsea system norberg water depth transverse strake stiffness test result spar caisson strake height The Gulfstar Standard Floater and Its Vortex Induced Motion Model Tests...

... williamson reservoir simulation cylinder node equation inline direction viv mesh Parameter Analysis of Vortex-induced Vibrations through Numerical Simulation Changjiang HE and Zhongdong DUAN School of Civil Engineering, Harbin Institute of Technology Harbin, Heilongjiang, P.R.China Jinping OU...

... and numerical methods. Williamson (1991), Wu et al . (1996) and Norberg (2003) have studied the vortex shedding from the cylinder with experimental methods. Different numerical methods have also been applied to simulate the flow around a circular cylinder and study the vortex shedding, such as discrete vortex...

... williamson cylinder circular cylinder hydrodynamic force frequency wake interference drag coefficient configuration coefficient Hydrodynamic Forces on Multiple Hanging-off Circular Cylinders in Uniform Flows Rudi Walujo Prastianto, Koji Otsuka, and Yoshiho Ikeda Department of Marine System...

... the shedding process. Ten reviews of vortexinduced forces and vortex-induced vibration are Gabbai and Benaroya (2005), Williamson and Govardhan (2004), Norberg (2003), Sarpkaya (1979, 2004), Khalak and Williamson (1999), Griffin and Hall (1991), Blevins (1990), Bearman (1984), King (1977), and Leinhard (1966...

... researchers, e.g., Sarpkaya (1979), Griffin & Ramberg (1982), Bearman (1984), Parkinson (1989), Sumer & Fredsoe (1997), Williamson & Govardhan (2004). Most of previous researches have mainly focused on the transverse dynamic responses of the cylinder undergoing flow-induced vibration. Feng (1968) studied...

... cylinder with low mass-damping coefficient (restrained to move in cross-flow direction). Comprehensive reviews of work done so far can be found in Williamson and Govardhan (2004) and Sarpkaya (2004). VIV of an elastically mounted cylinder is governed by a number of parameters, including mass ratio (m...

...-flow motion vibration free vibration inline motion williamson amplitude harmonic force natural frequency oscillation cross-flow amplitude frequency High Harmonic Forces and Predicted Vibrations from Forced In-line and Cross-flow Cylinder Motions J.M. Dahl, F.S. Hover, M.S. Triantafyllou...