A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS

Ranjodh S. Rai; Zhihua Ma; Ling Qian; Wei Bai; Zaibin Lin; Anatoliy Khait

doi:10.1115/OMAE2023-103590

A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS

Ranjodh S. Rai, Zhihua Ma, Ling Qian, Wei Bai, Zaibin Lin, Anatoliy Khait

Department of Mechanical Engineering and Mechatronics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents a new integrated (hybrid) hydrodynamic numerical model which couples a finite volume-based fully nonlinear potential flow (FNPF) solver with an incompressible two-phase Navier-Stokes (NS) solver in OpenFOAM. The coupling procedure follows a domain (zonal) decomposition approach in which an overlapping relaxation zone is utilised to implement a weak (one-way) coupling. The method for transferring information is simple, and the coupling accurate. Indeed, given that both solvers have been developed in OpenFOAM and are finite volume-based, only a method to calculate the volume fraction from the free-surface elevation has to be implemented: the velocity and pressure are already calculated as part of the FNPF solution and can be transferred accordingly—simplifying things greatly and avoiding unwanted errors. In addition, existing advanced OpenFOAM functionalities are used for the required interpolation. The relaxation zone then also ensures the coupling process is stable through a smooth transition from the FNPF solution to the N-S solution, as well as by absorbing any reflected waves. The new model is then validated through a number of benchmark test cases involving wave propagation, transformation, and structure interaction. It is shown to produce accurate numerical solutions that agree well with existing theoretical results and experimental data.

Original language	English
Title of host publication	CFD and FSI
ISBN (Electronic)	9780791886892
DOIs	https://doi.org/10.1115/OMAE2023-103590
State	Published - 2023
Event	ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023 - Melbourne, Australia Duration: 11 Jun 2023 → 16 Jun 2023

Publication series

Name	Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume	7

Conference

Conference	ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023
Country/Territory	Australia
City	Melbourne
Period	11/06/23 → 16/06/23

Keywords

Floating Structure
Free-surface Flow
Numerical Wave Tank
OpenFOAM

Access to Document

10.1115/OMAE2023-103590

Cite this

@inproceedings{30efdfeced704921b854c15f317e1af1,

title = "A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS",

abstract = "This paper presents a new integrated (hybrid) hydrodynamic numerical model which couples a finite volume-based fully nonlinear potential flow (FNPF) solver with an incompressible two-phase Navier-Stokes (NS) solver in OpenFOAM. The coupling procedure follows a domain (zonal) decomposition approach in which an overlapping relaxation zone is utilised to implement a weak (one-way) coupling. The method for transferring information is simple, and the coupling accurate. Indeed, given that both solvers have been developed in OpenFOAM and are finite volume-based, only a method to calculate the volume fraction from the free-surface elevation has to be implemented: the velocity and pressure are already calculated as part of the FNPF solution and can be transferred accordingly—simplifying things greatly and avoiding unwanted errors. In addition, existing advanced OpenFOAM functionalities are used for the required interpolation. The relaxation zone then also ensures the coupling process is stable through a smooth transition from the FNPF solution to the N-S solution, as well as by absorbing any reflected waves. The new model is then validated through a number of benchmark test cases involving wave propagation, transformation, and structure interaction. It is shown to produce accurate numerical solutions that agree well with existing theoretical results and experimental data.",

keywords = "Floating Structure, Free-surface Flow, Numerical Wave Tank, OpenFOAM",

author = "Rai, {Ranjodh S.} and Zhihua Ma and Ling Qian and Wei Bai and Zaibin Lin and Anatoliy Khait",

note = "Publisher Copyright: Copyright {\textcopyright} 2023 by ASME.; ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023 ; Conference date: 11-06-2023 Through 16-06-2023",

year = "2023",

doi = "10.1115/OMAE2023-103590",

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Rai, RS, Ma, Z, Qian, L, Bai, W, Lin, Z & Khait, A 2023, A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS. in CFD and FSI., v007t08a003, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, vol. 7, ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2023, Melbourne, Australia, 11/06/23. https://doi.org/10.1115/OMAE2023-103590

A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS. / Rai, Ranjodh S.; Ma, Zhihua; Qian, Ling et al.
CFD and FSI. 2023. v007t08a003 (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 7).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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A NEW INTEGRATED FINITE VOLUME–FINITE VOLUME NUMERICAL MODEL FOR WAVE-STRUCTURE INTERACTIONS

Abstract

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Keywords

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