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dc.contributor.authorMushyam, Aditya
dc.contributor.authorBergadà Granyó, Josep Maria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.identifier.citationMushyam, A., Bergadà, J.M. A numerical investigation of wake and mixing layer interactions of flow past a square cylinder. "Meccanica", Gener 2017, vol 52, num. 1-2, p. 107-123.
dc.descriptionThis is a copy of the author 's final draft version of an article published in the journal Meccanica. The final publication is available at Springer via
dc.description.abstractThe aim of the present study is to simulate and analyze the interaction of two dimensional flow past a square cylinder in a laminar regime with an upstream mixing layer developed by an axis symmetrical horizontal splitter plate. The mixing layer is generated upstream of the square cylinder by mixing two uniform streams of fluid with different velocities above and below the splitter plate. A range of upstream domain lengths, distances between the splitter plate and the square cylinder, and upstream velocity ratios between the two streams of fluid are analyzed. Unconfined flow over a square cylinder placed in uniform upstream flow is initially analyzed as it plays a crucial role in understanding the properties of the wake. The results are compared with the existing literature to validate the code developed and they are found to be in very good agreement. It is observed from the present study that at smaller velocity ratios, the vortices shed into the wake consist of both clockwise and anticlockwise moment vortices. As velocity ratio is increased only clockwise moment vortices are shed downstream and anticlockwise vortices are shed as Kelvin–Helmholtz instabilities. In all simulations undertaken the same phenomena is observed independent of the upstream Reynolds number, indicating that velocity ratio is a primary parameter influencing the flow. Different instability modes were observed and they were highly dependent on the upstream velocity ratio.
dc.subjectÀrees temàtiques de la UPC::Física::Física de fluids
dc.subject.lcshFluid dynamics
dc.subject.lcshLaminar flow
dc.subject.otherSquare cylinder
dc.subject.otherMixing layer
dc.subject.otherSplitter plate
dc.subject.otherWake–mixing layer interaction
dc.subject.otherLaminar flow
dc.titleA numerical investigation of wake and mixing layer interactions of flow past a square cylinder
dc.subject.lemacDinàmica de fluids
dc.subject.lemacFlux laminar
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorMushyam, A., Bergadà, J.M.

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