๐”– Bobbio Scriptorium
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Numerical Simulation of High Amplitude Oscillatory Flow About a Circular Cylinder

โœ Scribed by J.R. Meneghini; P.W. Bearman

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
650 KB
Volume
9
Category
Article
ISSN
0889-9746

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โœฆ Synopsis

A discrete vortex method incorporating viscous diffusion is used to simulate the flow about an oscillating circular cylinder. This flow is simulated considering a frame of reference fixed to the cylinder and with an oscillating cross flow. Force time histories are shown for a Reynolds number of 200 and for different values of amplitude ( (A) ) and frequency of oscillation ((f)). The lock-in boundary for vortex shedding is obtained. For values of amplitude above about (0.6 \mathrm{D}), an asymmetric mode of shedding is observed. Distributions of (u_{\text {r.m.s. }} / U) across the wake, for various downstream stations, are shown with estimates of vortex formation length for different values of (A) and (f).

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