fa97f65a-5f05-4e01-8216-279aa9d5ea0920210305081823729wseamdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON FLUID MECHANICS2224-347X1790-508710.37394/232013http://wseas.org/wseas/cms.action?id=40361420211420211610.37394/232013.2021.16https://wseas.org/wseas/cms.action?id=23282CarloCraveroDipartimento di Ingegneria Meccanica, Energetica, Gestionale e dei Trasporti (DIME) Università degli Studi di Genova Via Montallegro 1 - 16145 Genova ITALYNicolaMarognaDipartimento di Ingegneria Meccanica, Energetica, Gestionale e dei Trasporti (DIME) Università degli Studi di Genova Via Montallegro 1 - 16145 Genova ITALYDavideMarsanoDipartimento di Ingegneria Meccanica, Energetica, Gestionale e dei Trasporti (DIME) Università degli Studi di Genova Via Montallegro 1 - 16145 Genova ITALYThe purpose of this paper is to characterize and to estimate the recirculating length behind an aerodynamic profile in ground effect with Gurney Flap. The flow characterization at high Reynolds numbers was performed by means of numerical analysis. A correlation between the size of the recirculation length and the frequency of vortex shedding was studied. The vortex shedding has a characteristic frequency, which, in this work, is correlated to the size of a recirculation length defined by the authors. The numerical investigation methodology applied to the profile with Gurney Flap, was previously developed on the well-documented test case of the flow around a cylinder at high Reynolds. The case was chosen to investigate and to validate the numerical approach with experimental data.3520213520214862https://www.wseas.org/multimedia/journals/fluid/2021/a145113-297.pdf10.37394/232013.2021.16.6https://www.wseas.org/multimedia/journals/fluid/2021/a145113-297.pdf10.1002/andp.18782411005Strouhal, V. Ueber eine besondere Art der Tonerregung (On an unusual sort of sound excitation). 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