A structural member with rectangular cross-section is frequently encountered in civil, mechanical and ocean engineering applications. Structural loading in terms of steady and unsteady pressure fields, susceptibility to flow-induced instabilities, etc. for tall buildings, bridges, offshore platforms, marine risers and a wide variety of other configurations have been of interest to engineers. The present research is aimed at understanding these issues at a fundamental level through a comprehensive study of the Moving Surface Boundary-layer Control (MSBC) as applied to two-dimensional rectangular prisms with reference to drag reduction and suppression of flow-induced vibrations. Extensive wind tunnel tests complemented by quasisteady analysis and flow visualization study suggest that the concept of the MSBC represents a versatile tool for reducing the fluid dynamic loading as well as control of both vortex resonance and galloping type of vibrations, and thereby promoting structural stability.
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