... upstream oil & gas cylinder resonance solid line underwater acoustic absorption phononic crystal void cylinder absorption frequency phononic structure broadband acoustic absorption reservoir characterization absorption coefficient acoustic absorption backing void cylinder...

...-chamber OWC device systemically. second order wave resonance phenomenon was observed inside the The locations of the largest surge force and bending moment were OWC chamber. The surge force and the pitch moment are found to be predicted by a fully nonlinear numerical model. Liu et al. (2018) insensitive...

... Abstract Radiation damping may play an important role in the prediction of gap resonance amplitude by potential flow models. In this paper, the radiation of the gap resonance between twin fixed floating boxes is numerically studied by using a linear potential flow model in frequency domain...

... frequency, significant increases of resistance and motion could appear due to resonance effect. In this study, a drillship with large moonpool opening area ~400 m 2 is selected to evaluate its resistance and motion performance in calm water and waves using CFD. For the calm water case, CFD simulation...

... the curves of transmission coefficients and reflection coefficients versus dimensionless parameter kh (wavenumber k ) or 2L /λ (two boxes space L , wavelength λ ). The Bragg resonance is also paid attention to, especially to the shift characteristics of Bragg condition where Bragg resonance would...

... of the carcass induce pressure pulsations which are eventually synchronized and amplified by an acoustical resonance along the length of the flexible. Despite this established knowledge, mitigation or suppression of the phenomenon once it occurs is hard to achieve. The purpose of this paper is describing field...

... connections to reduce the load. This also introduces narrow gaps between the FHSTs and the surrounding floating barges to allow horizontal movement of the FHST. To investigate the potential gap resonance problem, both experimental and numerical study have been carried out. A simplified two-FHST...

... experiment liquified natural gas gas monetization freight & logistics services fender lngc subsea system motion response spectrum resonance lng bs side-by-side eigenvector natural frequency ocean engineering lng carrier lng matrix eigenvalue analysis mooring system...

... the experimental data for those motions that primarily contribute to power generation when the PTO is engaged. sustainability device motion spar experimental data rao parametric study agreement pto buoy sustainable development generator resonance drag coefficient renewable energy linear...

... rectangular bay high tide condition subtidal wave l-shape bay tidal phase tide condition incident subtidal wave experiment oscillation amplitude resonance wave period pressure disturbance tidal motion incident wave period secondary oscillation maximum wave height ABSTRACT...

... that the resonant-wave forces on each caisson are ten times larger than an isolated caissons. Hong et al. (2005) numerically and experimentally investigate the interaction characteristics of side-by-side moored FLNG and LNGC. Xu et al. (2014) investigated the hydrodynamics interactions of side-by-side moored three...

... wave frequency resonant frequency vertical degree equation reservoir simulation narrow gap freedom resonance horizontal wave force fluid resonance frequency subsea system surface elevation wave tank wave height incident wave frequency hydrodynamic force hydrodynamic resonance...

.... The diffraction/radiation problem is solved using a higher-order boundary element method. Focus is given on the effect of the flexural rigidity and of the internal to external radius ratio on the physical quantities describing the behavior of the plate. Resonance effects of the fundamental modes of water motion...

... kh 1 upstream oil & gas variation amplitude interaction numerical simulation wave height reservoir simulation numerical wave tank floating production system gap 1 hydrodynamic resonance resonant frequency rectangular box non-advection step frequency equation gap 2 narrow...

... corner. Considering multiple dynamic excitation sources acting on the frame structure such as random waves, mooring tension, wind loads, and wind turbine dynamics, the coupled hydroelastic responses of the MUFOWT are investigated in terms of resonance risk and consequences in motion and structural...

... ship hull resonance frequency freight & logistics services body response ship length flexible body response state vector natural frequency low frequency region modal transfer matrix peak zone wave-induced load marine transportation matrix high frequency region ship...

... ABSTRACT In this paper, ship stability of randomly excited parametric roll resonance is studied. Parametric roll resonance will lead to severe roll motion and even capsize. Studies on parametric roll resonance have many challenges for the randomness and nonlinear. Characteristics of parametric...

... ABSTRACT A new wave absorbing approach based on the gap resonance principle is proposed in this work. The wave absorber is designed by placing a fixed box in front of the end of the wave flume, which forms a narrow gap between them. Numerical examinations are carried out to investigate...

... in all envisaged situations. The Rσ (Resonant σ) semi-analytical method is a motion-based approach to estimate the sloshing impact in a prismatic tank for every filling level (Kayal & Berthon, 2013). On the one hand, this method relies on the fact that the impact rate is governed by the liquid...

... Abstract A systematic experimental study of the resonance behavior inside an LNG tank is presented. Filling levels between 30% and 90% were investigated. Thus, the study also includes intermediate filling levels, typically occurring during the loading and unloading process. Water and air, both...