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- W4312492798 abstract "Abstract Sea wave spectra play an important role in the design of marine vehicle and off-shore structures. Most of the available studies for seakeeping performance of marine vehicle have been concentrated on analyzing the wave spectra generated by local wind due to its simplicity as well as inadequacy of measurements. However, simultaneous presence of swell always changes the model of wave spectrum and affecting offshore structures design seakeeping safety. In this study, the Ochi-Hubble spectrum, which is a typical six-parameter (based on the data set from south China sea) bimodal spectrum, is applied to model the mixed long-crest wave composed of wind-sea and swell components. Based on an in-house computational fluid dynamics (CFD) solver, a numerical wave tank is developed and the wave generating method by defining the velocity inlet boundary condition is used to simulate the mixed wave composed of wind-sea and swell. The level-set method is applied to capture the free surface during the numerical simulation. Verification and validation works are carried out to estimate the numerical errors and uncertainties for the mixed wave generation. Verification work includes grid and time-step convergence studies, where the proper time-step and grid can be determined. For the validation study, the numerical results are compared with the theoretical results, with respect to the time series behavior and spectrum characteristic. The comparisons show that the differences of the typical parameters between the CFD and theoretical results are all less than 3%, which indicate that the CFD method simulates the mixed wave accurately." @default.
- W4312492798 created "2023-01-05" @default.
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- W4312492798 date "2022-06-05" @default.
- W4312492798 modified "2023-09-27" @default.
- W4312492798 title "Numerical Simulation of Bimodal Wave Spectrum Based on Viscous CFD Method" @default.
- W4312492798 doi "https://doi.org/10.1115/omae2022-79828" @default.
- W4312492798 hasPublicationYear "2022" @default.
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