‎incompressible ‎smoothed particle hydrodynamics simulations on free surface flows

‎the water wave generation by wave paddle and a freely falling rigid body are examined by using an incompressible smoothed particle hydrodynamics (isph)‎. ‎in the current isph method‎, ‎the pressure was evaluated by solving pressure poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure poisson equation contains both of divergence free velocity field and density invariance condition‎. ‎here‎, ‎the fluid-structure interaction is introduced in free surface flows and the structure is taken as a rigid body motion‎. ‎in this study‎, ‎we generated the water waves using the scott russell wave generator‎, ‎in which the heavy box sinking vertically into water‎. ‎also‎, ‎the solitary wave is generated by using the wave paddle and the generated solitary wave profiles are compared with the available results with a good agreement‎. ‎free falling of torpedo over the water in tank was simulated by using 3d-isph ‎method.