3.The body is represented by a three-dimensional supersonic source-sink and doublet distributed on the bodyaxis,and the lee side vortexwake is modeled by a large number of dis-crete vortices in crossflow plane called a“vortex cloud”.
4.It is found that the vortex structures include the Kelvin?like vortexes in shear?layer of jet, the cross?flow separation vortex pair, the horseshoe vortex system in upstream bottom region of jet and the wake vortexes.
5.The relationship between the non-dimensional drag coefficient of SMA plate face and time is presented, and the pressure distribution on and around the SMA plate surface as well as the Karman vortex configuration in the wake at a certain time are given.