... methods with HOBEM (Higher Order Boundary Element Method). The third step is to solve equation of motion. The pressure is recovered from the velocity potentials and the motions. These steps are usually done in frequency domain. The time domain responses can be obtained by solving equation of motion...

... froude number 0 ittc boundary value problem ship simonsen coefficient green function ship motion equation rao irspeed 0 marine transportation forward speed exp forward speed correction frequency domain Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering...

... turbine frequency domain frequency vibration blade rotation wind spectrum aerodynamic load wind load estimation method multivariate rotation frequency effect wind turbine blade blade model Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai...

... ABSTRACT Large amount parameters make optimizing multiple tuned mass dampers’ (MTMD) performance difficult. A simplified method of MTMD optimization is proposed. In this method, tuned mass dampers (TMDs) are used to suppress the peak responses in the frequency domain by being tuned...

... of the floating structure in the frequency domain is presented and the corresponding RAO's are calculated. The hydrodynamic characteristics are determined using matched axisymmetric eigen-function expansions, while the linearized loading contributed by the WT (gravitational, inertial and aerodynamic) is estimated...

... investigation numerical model chamber wall resonance hydrodynamic pressure wave load frequency domain surface elevation ocean engineering Proceedings of the Thirty-first (2021) International Ocean and Polar Engineering Conference www.isope.org Rhodes, Greece, June 20 25, 2021 Copyright © 2021...

... a system of this type with additional degrees-of-freedom (DoF) is not trivial, and new simulation tools are needed that can be used to not only analyze such configurations, but also facilitate rapid optimization of these designs. To that end, this paper presents a computationally-efficient frequency domain...

..., it is not enough to only obtain the information in time domain or in frequency domain. It is also necessary to understand the variation of spectrum with time. The traditional method is no longer suitable and effective signal processing techniques are needed to analyze the signals (Sejdic et al., 2009). Therefore...

... frequency domain in comparison with the single-chamber one. Then, the effects of the drafts of two sub-chambers are discussed with the different incident waves. It is observed that a proper set of two sub-chambers drafts can enhance the OWC hydrodynamic performance in the high-frequency domain...

... are compared with that obtained by the method of UR S11A given by IACS and linear frequency domain. Then, the characteristics of the design loads are analyzed. And based on the results, the sea conditions that influence the design load most are filtered. INTRODUCTION The coupling effect between elastic...

... hybrid wind-wave system amplitude wind turbine coefficient frequency domain social responsibility sustainability wind energy subsea system motion response wave energy converter simulation ocean energy renewable energy proceedings equation wave energy sesam sustainable...

... breakwater. Therefore, it is necessary to study the hydrodynamic performance under the shallow water wave for the floating breakwater. In the paper, by using the hydrodynamics software ANSYS-AQWA, a hull-and-mooring coupled dynamic analysis program in frequency domain is developed for the global motion...

... Semi-Submersible Airgap Calculation Using Frequency Domain and Time Domain Methods Zhigang (Kevin) Tian, Branka Radanovic, Otto DaSilva Exmar Offshore Company Houston, Texas, USA ABSTRACT This paper presents an air gap calculation for semi-submersibles using both frequency domain and time domain...

.... In this work the influence of the liquid cargo motion inside the tanks in the ship motion will be studied. Comparing potential models in frequency domain with experimental data (Rocha, TP et al, 2015) it was observed that for some filling percentages the results do not present good agreement, mainly below 15...

..., RAOs (frequency domain) and motion response in irregular waves (time domain) were calculated. Resistance test and sea keeping performance test of wind turbine installation vessel model were carried out at the towing tank and the ocean engineering deep basin of Harbin Engineering University. The results...

... of the most of traditional and mainstream mesh based CFD techniques. frequency domain efg dhd frequency reservoir simulation particle dimension perforated swash bulkhead free surface elevation bulkhead nishimoto pressure time series tank amplitude clean tank resonance mode upstream oil...

.... The hydrodynamic motion behavior and joint force of the system needsto be predicted to analyze the best power conversion efficiency and design the safe structure for the machinery. In this paper, a frequency domain analysis method based on potential theory is applied in calculating the wave frequency motion...

.../copy method need a large number of computation, considering the multi-peak structure spectral of comb signal, this paper proposed a novel detection algorithm based on frequency domain matched searching: use the difference between signal and noise in the frequency domain, to detecting signal and achieve...

... in heave. Therefore, easy access for maintenance is guaranteed, and it may be free to choose an installation method among the tight-mooring, slack-mooring, or standing on a sea-bed. The dynamics of SPA-OWC is analyzed in the frequency domain and the theoretical performance is computed using ANSYS AQWA...

... ABSTRACT A computational tool, based on a hybrid model, for the simulation of the coupling between ship motions and liquid sloshing inside ship tanks is considered. A 3D panel method based on the frequency-domain potential-flow theory is used to evaluate the external flow around the ship hull...