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Numerical Simulation of Abnormal Wave Height Change Induced by Excavated Waterway with Boussinesq Equation |
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| Authors: | Zhang Yonggang and Li Yucheng Associate Professor Dept of Mechanic Engineering Shanghai Jiao Tong University Shanghai Professor Dept of Civil Engineering Dalian University of Technology Dalian |
| Institution: | Zhang Yonggang and Li Yucheng Associate Professor,Dept. of Mechanic Engineering,Shanghai Jiao Tong University,Shanghai 200030 Professor,Dept. of Civil Engineering,Dalian University of Technology,Dalian 116024 |
| Abstract: | A nonlinear numerical model has been set up by use of Boussinesq Equation with finite difference method, and has been applied to the simulation of the abnormal change of wave height induced by excavated waterway. Numerical results demonstrate that the abnormal change of wave height is due to the adding of the reflected wave height induced by excavated waterway to the incident wave height. Because the angle between the incident wave and the axis of the waterway is smaller than the critical angle, the reflected wave produced by the waterway may propagate to the breakwater and may be added with the incident wave, then the abnormal change of wave height before the breakwater may be caused. So the wave reflection caused by the change of water depth cannot be neglected. |
| Keywords: | Boussinesq Equation numerical simulation regular wave excavated waterway wave height |
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