Abstract
A couple of years have passed since the Great East Japan Earthquake Tsunami, new Tsunami disaster prevention and mitigation methods of bridges are actively discussing toward the next millennium Tsunami. A numerical simulation can be useful way for predicting the damage of bridges, because real size experimental tests are almost impossible and too costly. In this study, particle method, which is widely applied not only for fluid dynamics and but also for solid mechanics, is utilized for fluid-rigid body interaction simulation. Mainly velocity based and force based formulations have been proposed for the fluid-rigid body treatment in the framework of particle methods. After a modified technique in the force based formulation related to the boundary condition is proposed in this paper, the difference of these two formulations has been discussing through a simple bridge wash out simulation.
