Fluid-rigid bodies interaction simulation using ISPH incorporated with the energy tracking impulse method

摘要

For the motion of fluid with large deformation, ISPH method is adopted to evaluate the hydrodynamic force towards the rigid bodies. Commonly, the contact force between rigid bodies is calculated by penalty method. However, it is unstable to deal with the collision or stacking problem without a very tiny time increment. Therefore, we adopt impulse method to calculate the contact force, where a relatively large time increment can be adopted and the energy conservation can be satisfied strictly.