Nonlinear numerical simulation on the extreme-wave kinematics

NING De-zhi; TENG Bin; JIANG Li-ming; ZANG Jun

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NING De-zhi, TENG Bin, JIANG Li-ming, ZANG Jun. Nonlinear numerical simulation on the extreme-wave kinematics[J]. Haiyang Xuebao, 2008, 30(3): 126-132.

Citation:

NING De-zhi, TENG Bin, JIANG Li-ming, ZANG Jun. Nonlinear numerical simulation on the extreme-wave kinematics[J]. Haiyang Xuebao, 2008, 30(3): 126-132.

NING De-zhi, TENG Bin, JIANG Li-ming, ZANG Jun. Nonlinear numerical simulation on the extreme-wave kinematics[J]. Haiyang Xuebao, 2008, 30(3): 126-132.

Citation:

NING De-zhi, TENG Bin, JIANG Li-ming, ZANG Jun. Nonlinear numerical simulation on the extreme-wave kinematics[J]. Haiyang Xuebao, 2008, 30(3): 126-132.

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Nonlinear numerical simulation on the extreme-wave kinematics

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
2.
Dalian Port Design & Research Institute Co. Ltd, Dalian 116001, China
3.
Department of Architecture & Civil Engineering, University of Bath, Bath, BA2 6AY, UK

Received Date: 2008-01-24
Rev Recd Date: 2008-03-31

Abstract

Abstract

A fully-nonlinear numerical model based on the time-domain higher-order boundary element method(HOBEM) is established to simulate the kinematics of extreme waves.In the model,the fullynonlinear free surface boundary conditions are satisfied and the semimixed Euler-Lagrange method is used to track free surface;the fourth-order Runge-Kutt a method is used to refresh the wave elevation and the velocity potential on the free surface at each time step;the image Green function is used so that the integration on the lateral surfaces and bottom are excluded.The extreme waves are generated by the method of wave focusing.The physical experiment sare carried out in a wave flume.On the horizotal velocity of the gauge,the numerical solutions are agreed well with experimental results.The charact eristics of the nonlinear extreme-wave kinematics and the velocity distribution are studied here.
- numerical wave tank,
- image Green function,
- higher-order boundary element method,
- full nonlinearity,
- extreme wave

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References(12)

References

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