The interaction of a single travelling vortex ring with thin permeable screens of constant porosity is investigated. Molecular Tagging Velocimetry (MTV), a non-invasive flow field measurement technique, is used to quantify the velocity field. The resulting velocity field is remapped onto a regularly spaced grid and other flow properties, such as vorticity, are calculated. Vortex structures, including those formed in the interaction process, are tracked using the location of peak vorticity. The role of vortex shedding in the interaction process is investigated. The formation mechanism of the vorticity in the downstream vortex structure is found to be a function of boundary layer dynamics. This work extends and confirms the results of prior studies of the interaction.
- Fluids Engineering Division
Investigation of the Interaction of Vortex Rings and Thin Porous Screens Using Molecular Tagging Velocimetry (MTV)
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Hrynuk, J, & Bohl, D. "Investigation of the Interaction of Vortex Rings and Thin Porous Screens Using Molecular Tagging Velocimetry (MTV)." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics. Incline Village, Nevada, USA. July 7–11, 2013. V01BT16A002. ASME. https://doi.org/10.1115/FEDSM2013-16171
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