Stacks and chimneys use helical strakes to suppress vortex-induced vibrations
Stacks, chimneys, and cylindrical offshore structures commonly utilize helical strakes to successfully disrupt wake formations and suppress vortex-induced vibrations.
The claim is specific, empirical, and directly tested in fluid dynamics literature. Retrieved papers such as [3] and [7] confirm that helical strakes are effective at suppressing vortex-induced vibrations on cylindrical structures like stacks and risers, and no papers contradict this relationship.
Tongming Zhou, S. F. Mohd. Razali, Liang Cheng. Investigation on Suppression of Vortex-Induced Vibration Using Helical Strakes. 2010. https://doi.org/10.1115/omae2010-20984
Experiments confirm that helical strakes effectively mitigate vortex-induced vibrations on cylinders by weakening shed vortices and disrupting lock-in.
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Bowen Tang, Xiantao Fan, Wei Tan. Experimental Study on Flow-Induced Vibration Control of Multiple Cylinders in Tandem With Helical Strakes. 2022. https://doi.org/10.1115/pvp2022-84443
Helical strakes are widely used and verified to control flow-induced vibrations on engineering structures like stacks and risers.
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