Abstract
The results of experimental studies and numerical simulations on the characteristics of a rectangular membrane made from elastic material in supersonic flow are presented. These experiments were conducted using the supersonic wind tunnel at ISAS. The characteristics of deformation, aerodynamic forces, and oscillation of the membrane are investigated experimentally. It was found that the membrane deformation and aerodynamic forces depend mainly on the aeroelasticity parameter (the ratio of aerodynamic force to elastic force), and that severe oscillation of the membrane is not observed in the experiments. A computational model, in which the membrane is described by a finite number of virtual particles, is also proposed, and their motion is computed in a Lagrangian manner. In the present study, two-dimensional calculations are performed. For the flow simulation, Newtonian flow analysis and compressible Navier-Stokes analysis are used. The results are compared with the experimental data, and good agreement is obtained.
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