Modeling the Unsteady Lift and Drag on a Finite-Length Circular Cylinder in Cross-Flow

Author: Capone D.E.   Lauchle G.C.  

Publisher: Academic Press

ISSN: 0889-9746

Source: Journal of Fluids and Structures, Vol.14, Iss.6, 2000-08, pp. : 799-817

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Abstract

Semi-empirical models for unsteady lift and drag are developed to predict the spectral features of the unsteady forces on a finite-length, right circular cylinder in cross-flow. In general, the models consist of two parts; the spatial variation of r.m.s wall pressure on the cylinder, and the correlation lengths which describe the spatial extent of the correlation of the unsteady wall pressures. Experiments were conducted in a low noise wind tunnel as a function of cylinder diameter Reynolds number (19 200