Local Force Measurements on Finite-Span Cylinders in a Cross-Flow

[+] Author and Article Information
V. K. Sin, Ronald M. C. So

Mechanical and Aerospace Engineering Department, Arizona State University, Tempe, Ariz. 85287

J. Fluids Eng 109(2), 136-143 (Jun 01, 1987) (8 pages) doi:10.1115/1.3242633 History: Received January 25, 1985; Online October 26, 2009


A technique employing a three-axis piezoelectric load cell is developed to measure local unsteady forces induced on cylinders placed in a cross flow. Verification of the technique is carried out with a two-dimensional circular cylinder. All measurements are made at a Reynolds number of ∼4.8 × 104 and a free-stream turbulence of ∼1.5 percent. The local two-dimensional unsteady lift measurement is found to be in excellent agreement with spanwise-averaged data reported in the literature, thereby validating the feasibility of the present technique. Steady and unsteady force measurements on finite-span circular cylinders are reported and compared with available data in the literature.

Copyright © 1987 by ASME
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