伝播する衝撃波によって誘起される剛体の運動

抄録

We performed a numerical simulation of the shock-induced motion of a cuboidal rigid body. In the simulation, a body-fitted grid associated with the moving rigid body was overlapped with a Cartesian grid fixed in space, and the transient inviscid flow around the rigid body was simulated coupled with the 6-degrees-of-freedom motion of the rigid body by using the numerical solvers implemented in OpenFOAM v1712. The results for the translational and angular displacements of the rigid body were compared with those obtained from a shock-tube experiment, in which the shockinduced motion of a cuboidal solid body floating in air and the flow field around the moving body were visualized using the shadowgraph technique. The good agreement found between the numerical and experimental results proved the validity of the present simulation.