摘要
A nonlinear method for simulating two-dimensional cavity-flow interaction in high velocity flows is suggested. Mathematical model for the dynamics of unsteady cavity boundary and the motion of the outside flow is set up, numerical and experimental investigations are made for the cavity flow past a two-dimensional bow- shaped body. The results show that because of the nonlinear effect, the trail of the cavity oscillates periodically, while the incipient point of the cavity almost remains fixed. Due to the unsteady oscilation of the cavity trail, the liquid pressure on the solid wall a little downstream of the reattachement point would rise sharply.
A nonlinear method for simulating two-dimensional cavity-flow interaction in high velocity flows is suggested. Mathematical model for the dynamics of unsteady cavity boundary and the motion of the outside flow is set up, numerical and experimental investigations are made for the cavity flow past a two-dimensional bow- shaped body. The results show that because of the nonlinear effect, the trail of the cavity oscillates periodically, while the incipient point of the cavity almost remains fixed. Due to the unsteady oscilation of the cavity trail, the liquid pressure on the solid wall a little downstream of the reattachement point would rise sharply.
