A Numerical and Experimental Investigation of Wave Generated by Submerged Landslides
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The Weakly-Compressible Moving Particle Semi-implicit (WC-MPS) approach is applied to investigate the wave propagation and the flow fields from sliding blocks. Two bed inclined slope angles at 40° and 50° are used to obtain the experimental results. Existing studies have focused on an inclination slope of 45°. The characteristics of the free surface at the two specific angles of 40° and 50° have yet to be examined in detail, where 50° is the maximum angle in the experimentation. Sliding blocks are released under water and the top edges are parallel to the water surface. The simulation results are compared to the experimental measurements on the moving water surface and the velocity distribution at specific locations. To analyze the flow fields, contour and vector plots illustrate the flow characteristics for the entire velocity distribution in the simulation domain along with the vortex movements from the sliding block. Two case scenarios are presented to investigate the velocity distribution of the sliding block. For the first case scenario, seven crosssections, including the front edge, the top edge, and the back edge of the sliding block were selected to further identify the characteristics of the horizontal and vertical velocity distributions. The second case scenario has five specific locations at the front, top and back edge of the block. A good agreement can be observed between the WC-MPS simulated results to the experimental data.