dc.contributor.author Angeltveit, Rune eng dc.date.accessioned 2013-04-30T12:38:01Z dc.date.available 2013-04-30T12:38:01Z dc.date.issued 2012-11-20 eng dc.date.submitted 2012-11-20 eng dc.identifier.uri https://hdl.handle.net/1956/6546 dc.description.abstract In this thesis I am making a computational fluid dynamics(CFD) simulation of a SWATH (Small Waterplane Area Twin Hull) wind turbine service vessel moving in still water at different speeds by using the CFD tool STAR-CCM+. Since I did not have any prior experience in CFD, a substantial part of the thesis is dedicated to theory in CFD. First of all theory for fluid dynamics and CFD methods are described. Based on this theory, models and solvers for the simulation in STARCCM + are chosen with the required boundary conditions and initial values. A major part of the simulation work is to obtain a good mesh before the solution is achieved. The paper consider the total hull resistance of the vessel at different speeds due to pressure and shear forces. The results are compared with a still water performance test for a scaled model. Wave making resistance is also considered in the comparison. The resistance on the four holes in the hull, where the ballast tanks are placed, are compared with the resistance on the hull. Secondly the paper examines how the water level inside the ballast tanks, which is open to sea at the front and at the back, are affected at different speeds. en_US dc.format.extent 2814860 bytes eng dc.format.mimetype application/pdf eng dc.language.iso eng eng dc.publisher The University of Bergen en_US dc.title Still Water Performance Simulation of a SWATH Wind Turbine Service Vessel en_US dc.type Master thesis dc.rights.holder Copyright the author. All rights reserved en_US dc.description.degree Master i Anvendt og beregningsorientert matematikk en_US dc.description.localcode MAMN-MAB dc.description.localcode MAB399 dc.subject.nus 753109 eng fs.subjectcode MAB399
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