Three-Dimensional Simulation of Landslide-Generated Waves

• Main Authors: yu-yang-chen, 陳昱仰
• Other Authors: 廖清標
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/18562114932286207738

碩士 === 逢甲大學 === 水利工程與資源保育學系 === 103 === The flow field with free surface has always been a difficult problem,if the flow field also contains moving boundary caused by solids and will make it more complicated.We utilize experimental data of Wu(2004),wave generated from a triangular block sliding along a slope bottom.The numerical simulation of the flow field caused by data falling block and free falling block,free surface changing process,shoreline run-up,the velocity vector,etc.are discussed.The numerical model is uses immersed boundary method to process flow field of soild,and the level set function method to treat free surface.In order to be able to accurately capture the value of the zero of level set function of the free surface,we use fifth-order WENO method in space,and third-order Runge-Kutta method in time. The three-dimensional flow is solved directly from the incompressible Navier-Stokes equations,the pressure Poisson equations.Finally,the use of graphics software to render 3D simulation results for each case,the model for simulation of the whole flow field and the free surface all give the satisfactory results.