Numerical study on wave-structure interaction based on functional decomposition method

Yu, Jilin; Yao, Chi; Liu, Liwei; Dong, Guohua; Zhang, Zhiguo

doi:10.1016/j.oceaneng.2022.113067

Cited by 4 publications

(7 citation statements)

References 37 publications

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“…The distance function 𝜑 𝑇 (𝑥, 𝑦, 𝑧, 𝑡) represents the distance from any point in flow field to the free surface, where the value of the distance function at the interface is 0 [11]. The single-phase level-set model [16] is shown as follows:…”

Section: The Incompressible Rans Equations and Single-phase Level-set...mentioning

confidence: 99%

“…) Furthermore, the velocities and pressure can be easily given as follows [11]: The equations for the wave properties in the incident field are described as follows: 𝐴 represents the wave amplitude, 𝜙 is the wave phase, 𝛽 is the wave encounter angle, 𝑘 is the wave number calculated as 2π divided by the wavelength (𝜆), and 𝜔 is the circular wave frequency determined by the square root of the product of the gravitational acceleration (𝑔) and the wave number (𝑘) under the assumption of infinite water depth. To obtain the velocity derivatives, an analytical approach is utilized.…”

Section: The Incident Wave Modelmentioning

confidence: 99%

“…The adapted RANS equations are discretized using the finite difference method and the PISO algorithm is employed for the solution of the velocity-pressure coupling. The HUST-SWENSE code [11], which is developed based on the URANS code HUST-Ship and the SWENSE model, is utilized for the computations. Structured grids with overset technology are employed in the simulations.…”

Section: Swense Modelmentioning

confidence: 99%

“…In recent years, there has been a growing interest among researchers in the hybrid methods that combine potential and viscous flows for seakeeping performance prediction [11]. These hybrid approaches offer the advantages of both potential flow and viscous flow methods.…”

Section: Introductionmentioning

confidence: 99%

“…The primary objective of this study is to develop a functional-decomposition hybrid solver HUST-SWENSE [11] that combines potential and viscous flows to accurately and quickly predict the waveinduced drift forces and motions experienced by ships in waves. In this study, the total field of HUST-SWENSE is composed of the incident field, calculated by the Airy wave theory, and complementary field, solved by the SWENSE model.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study on wave-induced drift forces and motions of a DTC ship in head and oblique waves using functional decomposition model

Fang

Yao

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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It is imperative to investigate the adequacy of propulsion power and steering mechanisms in order to maintain the manoeuvrability of ships in adverse wave conditions, as the drift forces caused by wave can result in deviation from the desired course. The primary objective of this research is to develop a hybrid approach, combining potential and viscous flows, known as SWENSE (Spectral Wave Explicit Navier-Stokes Equations), to accurately assess the wave-induced drift forces and motions experienced by ships in waves. SWENSE is a hybrid approach based on the functional decomposition model, in which the total field is composed of the incident field and complementary field. In this study, the incident filed waves are calculated by the Airy wave theory and the complementary field is solved by the SWENSE model. The wave conditions are selected according to the benchmark cases of the European Union research project SHOPERA (Energy Efficient Safe Ship Operation). The wave-induced loads and motions of DTC in head and oblique waves are calculated. Results of CFD (Computational Fluid Dynamics) are compared with those of EFD (Experimental Fluid Dynamics) and other numerical methods. In addition, the wave-induced drift forces of the fixed/3DOF (Degrees of Freedom) ships are compared with each other (3DOF includes heave, roll and pitch). SWENSE model is proven to be reliable for the predictions of the wave-induced drift forces and motions of ships in waves.

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Section: The Incompressible Rans Equations and Single-phase Level-set...mentioning

confidence: 99%

Section: The Incident Wave Modelmentioning

confidence: 99%

Section: Swense Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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