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http://dx.doi.org/10.7734/COSEIK.2021.34.1.59

SPH-Based Wave Tank Simulations  

Lee, Sangmin (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Kim, Mujong (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Ko, Kwonhwan (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Hong, Jung-Wuk (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.34, no.1, 2021 , pp. 59-69 More about this Journal
Abstract
Recently, large-scale offshore and coastal structures have been constructed owing to the increasing interest in eco-friendly energy development. To achieve this, precise simulations of waves are necessary to ensure the safe operations of marine structures. Several experiments are required in the field to understand the offshore wave; however, in terms of scale, it is difficult to control variables, and the cost is significant. In this study, numerical waves under various wave conditions are produced using a piston-type wavemaker, and the produced wave profiles are verified by comparing with the results from a numerical wave tank (NWT) modeled using the smoothed particle hydrodynamics (SPH) method and theoretical equations. To minimize the effect by the reflected wave, a mass-weighted damping zone is set at the right end of the NWT, and therefore, stable and uniform waves are simulated. The waves are generated using the linear and Stokes wave theories, and it is observed that the numerical wave profiles calculated by the Stokes wave theory yield high accuracy. When the relative depth is smaller than two, the results show good agreement irrespective of the wave steepness. However, when the relative depth and wave steepness are larger than 2 and 0.04, respectively, the errors are negligible if the measurement position is close to the excitation plate. However, the error is 10% or larger if the measurement position is away from the excitation location. Applicable target wave ranges are confirmed through various case studies.
Keywords
smoothed particle hydrodynamics (SPH); numerical wave tank (NWT); wave steepness; stokes wave;
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  • Reference
1 Monaghan, J.J. (1994) Simulating Free Surface Flows with SPH, J. Comput. Phys., 110(2), pp.399-406.   DOI
2 Morison, J.R., Johnson, J.W., Schaaf, S.A. (1950) The Force Exerted by Surface Waves on Piles, J. Pet. Technol., 2(05), pp.149-154.   DOI
3 Prasad, D.D., Ahmed, M.R., Lee, Y.H., Sharma, R.N. (2017) Validation of a Piston Type Wave-maker Using Numerical Wave Tank, Ocean Eng., 131, pp.57-67.   DOI
4 Schaffer, H.A. (1996) Second-order Wavemaker Theory for Irregular Waves, Ocean Eng., 23(1), pp.47-88.   DOI
5 Ursell, F., Dean, R.G., Yu, Y.S. (1960) Forced Small-amplitude Water Waves: a Comparison of Theory and Experiment, J. Fluid Mech., 7(1), pp.33-52.   DOI
6 Wienke, J., Oumeraci, H. (2005) Breaking Wave Impact Force on a Vertical and Inclined Slender Pile-theoretical and Large-scale Model Investigations, Coast. Eng., 52(5), pp.435-462.   DOI
7 Altomare, C., Dominguez, J.M., Crespo, A.J.C., Gonzalez-Cao, J., Suzuki, T., Gomez-Gesteira, M., Troch, P. (2017) Long-Crested Wave Generation and Absorption for SPH-based DualSPHysics Model, Coast. Eng., 127, pp.37-54.   DOI
8 Crespo, A.J.C., Gomez-Gesteira, M., Dalrymple, R.A. (2007) Boundary Conditions Generated by Dynamic Particles in SPH Methods, Comput. Mater. & Contin., 5(3), pp.173-184.
9 Dalrymple, R.A., Rogers, B.D. (2006) Numerical Modeling of Water Waves with the SPH Method, Coast. Eng., 53(2-3), pp.141-147.   DOI
10 Dean, R.G., Dalrymple, R.A. (1991) Water Wave Mechanics for ENgineers and Scientists, Advanced Series on Ocean Engineering, 2, World Scientific Publishing Company, Singapore, pp.170-186.
11 Didier, E., Neves, M.G. (2012) A Semi-infinite Numerical Wave Flume Using Smoothed Particle Hydrodynamics, Int.J. Offshore & Polar Eng., 22(03), pp.193-199.
12 Finnegan, W., Goggins, J. (2012) Numerical Simulation of Linear Water Waves and Wave-structure Interaction, Ocean Eng., 43, pp.23-31.   DOI
13 Goda, Y. (1967) Travelling Secondary Wave Crests in Wave Channels, Port and Harbour Research Institute, Ministry of Transport, Japan, 13, pp.32-38.
14 Gingold, R.A., Monaghan, J.J. (1977) Smoothed Particle Hydrodynamics: Theory and Application to Non-spherical Stars, Mon. Not. R. Astron. Soc., 181(3), pp.375-389.   DOI
15 Havelock, T.H. (1929) LIX. Forced Surface-Waves on Water, The Lond. Edinb. & Dublin Philos. Mag. & J. Sci., 8(51), pp.569-576.   DOI
16 Krvavica, N., Ruzic, I., Ozanic, N. (2018) New Approach to Flap-type Wavemaker Equation with Wave Breaking Limit, Coast. Eng., 60(1), pp.69-78.   DOI
17 Hallquist, J.O. (2006) LS-DYNA Theory Manual.
18 Hallquist, J.O. (2007) Ls-dyna Keyword User's Manual. Livermore Software Technology Corporation.
19 Kim, T.Y., Jang, S.J., Kim, C.K. (2017) Application of InVEST Offshore Wind Model for Evaluation of Offshore Wind Energy Resources in Jeju Island, J. Korean Assoc. Geogr. Inf. Stud., 20(2), pp.47-59.   DOI
20 Le Mehaute, B. (2013) An Introduction to Hydrodynamics and Water Waves, Springer Science and Business Media, Berlin, Heidelberg, p.205.
21 Lee, S., Hong, J.W. (2020a) Parametric Studies on Smoothed Particle Hydrodynamic Simulations for Accurate Estimation of Open Surface Flow Force, Int. J. Naval Arch. & Ocean Eng., 12, pp.85-101.   DOI
22 Lee, S., Hong, J.W. (2020b) A Semi-Infinite Numerical Wave Tank Using Discrete Particle Simulations, J. Mar. Sci. & Eng., 8(3), pp.159-162.   DOI
23 Lee, S., Ko, K., Hong, J.W. (2020a) Comparative Study on the Breaking Waves by a Piston-type Wavemaker in Experiments and SPH Simulations, Coast. Eng., 62(2), pp.267-284.   DOI
24 Lee, K., Ha, Y.J., Kim, K.H., Hong, S.Y. (2020b) Evaluation of Structural Response of Cylinderical Structures Based on 2D Wave-Tank Test Due to Wave Impact, J. Comput. Struct. Eng. Inst. Korea, 33(5), pp.287-296.   DOI
25 Lucy, L.B. (1977) A Numerical Approach to the Testing of the Fission Hypothesis, The Astron. J., 82(12), pp.1013-1024.   DOI
26 Madsen, O.S. (1971) On the Generation of Long Waves, J. Geophys. Res., 76(36), pp.8672-8683.   DOI