TY - GEN
T1 - Numerical recreation of the draupner wave in crossing wave systems using smoothed particle hydrodynamics
AU - Kanehira, Taiga
AU - McAllister, Mark L.
AU - Draycott, Samuel
AU - Nakashima, Takuji
AU - Taniguchi, Naokazu
AU - Doi, Yasuaki
AU - Ingram, David
AU - Van Den Bremer, Ton S.
AU - Mutsuda, Hidemi
N1 - Funding Information:
This work was partly supported by JSPS KAKENHI Grant Number 19J13966, 17H03494 and 19H04292, JST A-STEP, and Collaborative research program (JASNAOE). The experimental data in this study were provided by the Dr. McAllister in the Department of Engineering Science of the University of Oxford, UK, and Dr. Draycott in the Aerospace and Civil Engineering at the University of Manchester, UK. I would like to express thanks for their support.
PY - 2020/12/18
Y1 - 2020/12/18
N2 - Freak waves, abnormally large waves, that occur in the open-ocean can cause significant damage to offshore structures and vessels. In this paper, we attempt to numerically reproduce the experiments of McAllister et al., (2019, J. Fluid Mech. [1]), to investigate the potential properties of the Draupner freak wave [2] in more detail. We use a Smoothed Particle Hydrodynamics (SPH) method to solve the full-3D Navier-Stokes equations. This Lagrangian method is able to recreate wave breaking, and has the potential to fully reproduce these experiments with the aim of providing further insight into properties of the waves created such as their kinematics and geometry. We compare time histories of water surface elevation produced numerically using four different particle sizes with experimentally-obtained data. We find good agreement in the time domain, with r2 (coefficient of determination) values between experimental and numerical data of over 0.94 the error in maximum wave height was less than 5 % for the finest particle size (over 100 million particles). We also numerically reproduce wave breaking observed in the experiments, where jet formation and breaking phenomena are qualitatively similar in appearance.
AB - Freak waves, abnormally large waves, that occur in the open-ocean can cause significant damage to offshore structures and vessels. In this paper, we attempt to numerically reproduce the experiments of McAllister et al., (2019, J. Fluid Mech. [1]), to investigate the potential properties of the Draupner freak wave [2] in more detail. We use a Smoothed Particle Hydrodynamics (SPH) method to solve the full-3D Navier-Stokes equations. This Lagrangian method is able to recreate wave breaking, and has the potential to fully reproduce these experiments with the aim of providing further insight into properties of the waves created such as their kinematics and geometry. We compare time histories of water surface elevation produced numerically using four different particle sizes with experimentally-obtained data. We find good agreement in the time domain, with r2 (coefficient of determination) values between experimental and numerical data of over 0.94 the error in maximum wave height was less than 5 % for the finest particle size (over 100 million particles). We also numerically reproduce wave breaking observed in the experiments, where jet formation and breaking phenomena are qualitatively similar in appearance.
UR - http://www.scopus.com/inward/record.url?scp=85099308894&partnerID=8YFLogxK
U2 - 10.1115/OMAE2020-18359
DO - 10.1115/OMAE2020-18359
M3 - Conference contribution
AN - SCOPUS:85099308894
VL - 8
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - International Conference on Ocean, Offshore, and Arctic Engineering (OMAE)
PB - American Society of Mechanical Engineers(ASME)
T2 - ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2020
Y2 - 3 August 2020 through 7 August 2020
ER -