Rationale for a Linear Perturbation Method for the Flow Field Induced by Fluid-Structure Interactions

[+] Author and Article Information
A. A. Sonin

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Mass. 02139

J. Appl. Mech 47(4), 725-728 (Dec 01, 1980) (4 pages) doi:10.1115/1.3153781 History: Received August 01, 1979; Revised May 01, 1980; Online July 21, 2009


A formal justification is developed for a method in which hydrodynamic data for a transient in a rigid-wall system (derived, for example, from a small-scale experimental simulation) is used as input in a linear computation for the perturbation flow field due to actual wall flexibility. The method is useful in problems where the basic flow transient is so complex that it can be quantified only empirically, and where the fluid-structure interaction is too complex for the fluid side to be represented by a priori defined equivalent mass.

Copyright © 1980 by ASME
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