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dc.contributor.authorMullligan, Sean
dc.contributor.authorMcDermott, Dermot
dc.contributor.authorClifford, Eoghan
dc.identifier.citationMullligan, Sean, McDermott, Dermot, & Clifford, Eoghan. (2018). Multiphase numerical modelling of hydraulic structures with rapidly rotating flows: Stormwater vortex hydrodynamic separator. Paper presented at the ISHS 2018 7th International Symposium on Hydraulic Structures, Aachen, Germany, 15-18 May.en_IE
dc.description.abstractHydraulic structures exhibiting strongly rotating flows are widely applied in the field of urban and wastewater hydraulics. Given demographic, urban development and climate change challenge, such infrastructure will require significant design innovation. Computational fluid dynamics (CFD) is increasingly an effective and widely used tool to evaluate and optimise new designs and determine performance efficiency for such structures. In this study, a full-scale prototype of a hydrodynamic vortex grit interceptor for stormwater conveyance systems (the BMS Stormbreaker Defender) was investigated using experimental and numerical methods. The prototype was evaluated physically in a full-scale test rig permitting flows of up to 30 l/s. Threedimensional velocity distributions were obtained along radial profiles using acoustic Doppler velocimetry (ADV). The threedimensional flow field in the chamber was also modelled using the ANSYS CFX software with a multiphase homogeneous EulerianEulerian approach. In particular, the effectiveness of two-phase flow modelling using the shear stress transport (SST) model with curvature correction was analysed. Good qualitative and quantitative agreements were found between the numerical solutions and the experimental data sets for the four flow scenarios investigated. The results of the CFD evaluation/validation, the practicality of obtained data, and the implications for the design of such a structure are discussed.en_IE
dc.description.sponsorshipThe authors would like to express their gratitude to Butler Manufacturing Services (Longford, Ireland) for making available the Stormbreaker Defender technology prototype and funding the investigation. The authors would also like to acknowledge the funding from Enterprise Ireland (IV-2016-0055-T) and additional support received by NUIG laboratory technical staff.en_IE
dc.publisherConferences and Events at DigitalCommons@USUen_IE
dc.relation.ispartof7 th International Symposium on Hydraulic Structuresen
dc.subjectAir-water interface interactionsen_IE
dc.subjecthydraulic structure design and managementen_IE
dc.subjectrotating and swirling flowsen_IE
dc.subjectvortex dynamicsen_IE
dc.subjectparticle separationen_IE
dc.titleMultiphase numerical modelling of hydraulic structures with rapidly rotating flows: Stormwater vortex hydrodynamic separatoren_IE
dc.typeConference Paperen_IE
dc.contributor.funderEnterprise Irelanden_IE
dc.local.contactEoghan Clifford, Room 1035, Alice Perry Engineering Building, Nui Galway, Galway. 2219 Email:

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