Particle CIP 法による水面衝撃問題の数値解析

抄録

We developed a new numerical scheme, Particle CIP method, for computing water entry of rigid body and elastic structure. Fluid-structure interaction is simulated using coupling algorithm; two fluids are treated on a fixed eulerian grid with massless maker particles to rebuild density function for capturing interface. On the other hand, structure is solved by lagrangian meshless method using SPH method. The present method was applied to water entry problems of V-shaped wedge, circular cylinder, cylindrical shell. The free surface deformation was first compared with numerical and experimental results. Both the impact pressure and the strain were also compared with some results obtained by other researchers.