Abstract
The paper presents results from a computer method for analyzing the unsteady interaction of a fluid and an initially flat circular elastic membrane. The method consists of an implicit coupling of computer programs for the fluid flowfield and for the membrane. The pressures and velocities in the flowfield are determined from a scheme based on the method of characteristics in three independent variables. The membrane is represented by a discrete number of points which are tracked as a function of time; lines connecting these points separate the fluid field into noninteracting regions. Deflected membrane shapes, pressure profiles, and the flowfield at various times are presented. The maximum deflection from the coupled analysis is shown to be only 60% of that obtained when the pressure on the membrane is maintained at the pressure associated with stagnating the freestream. Cp c E h hr M N P Ps R r s t U
Published Version
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