Numerical investigation of bubbles in channel flow

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dc.contributor.authorLe Guen, Rémy
dc.contributor.departmentChalmers tekniska högskola / Institutionen för sjöfart och marin tekniksv
dc.contributor.departmentChalmers University of Technology / Department of Shipping and Marine Technologyen
dc.date.accessioned2019-07-03T13:56:16Z
dc.date.available2019-07-03T13:56:16Z
dc.date.issued2016
dc.description.abstractThis master’s thesis aims to study the numerical methods that can simulate the influence of injection of air bubbles under a ship’s hull. The geometry of the hull is simplified to a flat plate and the analysis is only done in two dimensions. An emphasis is given into the prediction of the reduction of the viscous resistance that is observed in experiments. This study is carried out using CFD analysis with the software OpenFOAM. Two frameworks, Eulerian-Eulerian and Eulerian-Lagrangian, that allows the simu-lation of a multiphase flow are set-up and the assumptions behind all the required models are explained. The simulations predicts a gain of eÿciency between 0% and 15% depending on the diameter of the bubbles. Some di˙erences in the results pro-duced by the two di˙erent methods are highlighted and guidance is given on which solver to use for a given case depending on the diameter and the concentration of the bubbles below the plate.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/238797
dc.language.isoeng
dc.relation.ispartofseriesReport. X - Department of Shipping and Marine Technology, Chalmers University of Technology, Göteborg, Sweden
dc.setspec.uppsokTechnology
dc.subjectTransport
dc.subjectTransportteknik och logistik
dc.subjectTransport
dc.subjectTransport Systems and Logistics
dc.titleNumerical investigation of bubbles in channel flow
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeNaval architecture and ocean engineering (MPNAV), MSc
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