Numerical investigation on the multi-body hydrodynamic interactions under Caspian Sea environmental conditions

Tafazzoli, Shima; Shafaghat, Rouzbeh; Alamian, Rezvan

doi:10.1016/j.oceaneng.2021.109048

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Liang et al [12] investigated the free-surface response near resonance in a narrow gap between two fixed, identical barges with square corners numerically and experimentally. Shima et al [13] used the boundary element method for coupled time-domain dynamic analyses to examine the hydrodynamic interactions between a turret-moored FPSO and shuttle tanker. Ren and Tao [14] investigated the dynamic responses of a two platforms system containing a Tension Leg Platform (TLP) and a tender assisted drilling (TAD) with a flexible connection between the two platforms.…”

Section: Introductionmentioning

confidence: 99%

Coupled response analysis of dual lifting vessels during collaborative lifting topside module

Li,

Tan,

Liu

et al. 2024

Brodogradnja

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Offshore assembly and disassembly operations represent a multi-billion-dollar market potential. Collaborative lifting by multiple vessels has emerged as a new operating paradigm for integrated offshore facilities assembly and disassembly. Hence, this paper investigates the hydro-dynamic interaction of dual lifting vessels in collaborative lifting operations. The coupled motions during multi-body operations are simulated using the commercial software SESAM. The feasibility of the numerical model for coupled motions in collaborative lifting is verified by comparing the numerical results of topside motions, vessel motions, and vertical lifting arm loads against experimental measurements. The effects of wave heading and period on the hydrodynamic responses of the topside module, dual lifting vessels, and lifting arms during collaborative operations are studied. Their influence patterns and mechanisms are analysed in detail. The results show that transverse waves and head wave induce significant heave and pitch motions of the topside module and vessels, but the maximum vertical loads on the lifting arms occur in oblique waves. The motion responses of the topside module and vessels increase with longer wave periods under the oblique sea condition, and roll motions are more sensitive to large periods compared to the gradual rise in heave and pitch.

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Section: Introductionmentioning

confidence: 99%

Coupled response analysis of dual lifting vessels during collaborative lifting topside module

Li,

Tan,

Liu

et al. 2024

Brodogradnja

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“…Nowadays, using renewable energy is among the programs and policies of developed and developing countries. With their significant energy density, the waves of seas and oceans are known as one of the sustainable subsets of renewable energy sources [1]. A variety of methods to harness the energy of seas' and oceans' waves have been submitted in the form of hundreds of ideas and research works.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Performance Assessment of Hydraulic Power Take-off System in Centipede Wave Energy Converter Considering Caspian Sea Wave Characteristics

2022

IJE

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“…Accordingly, design and construction play a role in dam spillways. Flood risks can be prevented if a dam spillway is properly designed and constructed [5][6][7]. Given their excellent hydraulic features, ogee-crested spillways are among the most investigated hydraulic structures.…”

Section: Introductionmentioning

confidence: 99%

Flow Discharge Prediction Study Using a CFD-Based Numerical Model and Gene Expression Programming

Mozaffari

Amini

Mehdipour

et al. 2022

Water

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The significance of spillways is to allow the flood to be safely discharged from downstream. There is a strong correlation between the poor design of spillways and the failures of dams. In order to address this concern, the present study investigates the flow over the Nazloo-ogee spillway using the CFD 3D numerical model and an artificial intelligence method called Gene Expression Programming (GEP). In a physical model, discharge and flow depths were calculated for 21 different total heads. Among different turbulence models, the RNG turbulence model achieved the maximum compatibility in computational fluid dynamic simulation. In addition, GEP was used to estimate Q, in which 70% of collected data was dedicated to training and 30% to testing. R2, RMSE, and MAE were obtained as performance criteria, and the new mathematical equation for the prediction of discharge was obtained using this model. Finally, the numerical model and GEP outputs were compared with the experimental data. According to the results, the numerical model and GEP exhibited a high level of correspondence in simulating flow over an ogee-crested spillway.

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Numerical investigation on the multi-body hydrodynamic interactions under Caspian Sea environmental conditions

Cited by 7 publications

References 19 publications

Coupled response analysis of dual lifting vessels during collaborative lifting topside module

Coupled response analysis of dual lifting vessels during collaborative lifting topside module

Experimental Study on Performance Assessment of Hydraulic Power Take-off System in Centipede Wave Energy Converter Considering Caspian Sea Wave Characteristics

Flow Discharge Prediction Study Using a CFD-Based Numerical Model and Gene Expression Programming

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