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Numerical simulation of the von Kármán vortex street
Šponiar, D. ; Trávníček, Zdeněk ; Vogel, Jiří
This report deals with numerical simulation of the wake airflow behind a circular cylinder using FLUENT solver. The flow is assumed to be two–dimensional, laminar, isothermal, and incompressible. The Reynolds number ranges Re = 30÷170. The computations give the steady wake flow for Re = 30÷60 and the periodic vortex shedding (von Kármán vortex street) for Re = 60÷170. The vortex shedding frequency has been quantified in the term of the Strouhal number–Reynolds number relationship. The present results agree very well with the previous experimental data, the maximum deviations of the simulations and experiments are within 1.2%.

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