The in-line and transverse forces acting on circular cylinders and the in-line force acting on spheres immersed in a harmonically oscillating fluid in a U-shaped vertical tunnel have been measured. The drag, inertia, and the transverse force (lift) coefficients have been determined through the use of a Fourier analysis and found to depend on a period parameter. The results have shown that the transverse force on cylinders is as large as the in-line force and alternates at frequencies ranging from one to four times the driving frequency of the fluid within the range of subcritical Reynolds numbers encountered in the investigation.
Forces on Cylinders and Spheres in a Sinusoidally Oscillating Fluid
Naval Postgraduate School, Monterey, Calif.
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Sarpkaya, T. (March 1, 1975). "Forces on Cylinders and Spheres in a Sinusoidally Oscillating Fluid." ASME. J. Appl. Mech. March 1975; 42(1): 32–37. https://doi.org/10.1115/1.3423549
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