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Session: Multiphase and non-Newtonian flows 1
Session starts: Wednesday 26 August, 13:30
Presentation starts: 14:30
Room: Room H

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Andries C. van Eckeveld (Laboratory for Aero & Hydrodynamics, Delft University of Technology, Delft, The Netherlands)
Avinash K. Pancham (Laboratory for Aero & Hydrodynamics, Delft University of Technology, Delft, The Netherlands)
Jerry Westerweel (Laboratory for Aero & Hydrodynamics, Delft University of Technology, Delft, The Netherlands)
Christian Poelma (Laboratory for Aero & Hydrodynamics, Delft University of Technology, Delft, The Netherlands)

Abstract:
Experiments have been carried out to investigate the effect of liquid cavity filling on the behavior of the gas flow over a flat plate cavity. PIV measurements in the gas phase reveal that cavity filling can affect vortex shedding in the cavity mouth. Shear layer vortices can break-up into smaller vortices, thereby losing their periodic interaction with the aft wall and, hence, their sound producing potential. Expected is that this is one of the mechanisms causing sound mitigation in corrugated pipes with liquid addition, observed in literature.