Engineering analysis method in fluid-structure interaction problem of hemispherical parachute

To carry out fluid-structure interaction (FSI) parachute simulation is difficult, but some engineering design work demands that the operation completes quickly and efficiently. Therefore, to meet this requirement, an engineering fluid-structure interaction simulation method was established to simulate the stage of hemispherical parachute stable descent. Supposing the initial canopy shape is axis-symmetric, the canopy-s pressure coefficient needed by structural simulation was computed from flow field simulation, and the new canopy shape was obtained from the structural simulation. This recycle procedure was repeated until the canopy gore centerline shape and parachute line shape were stable. The results show that the canopy shape can be quickly converged, and the method satisfies the engineering demands.