Numerical investigation for the moment caused by shallow water sloshing under a transient roll motion

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Manderbacka, Teemu Xiao, Ran 2015-10-16T08:47:53Z 2015-10-16T08:47:53Z 2015-09-21
dc.description.abstract This paper aims to study the damping effect of the shallow water sloshing on the rectangular tank under a free decaying roll motion in 2 dimensional condition. OpenFOAM software as a CFD method is applied, and its solver interDyMFoam is used to simulate the sloshing phenomenon and process the data. A good representation of the fluid motion evolution and a sound evaluation of the sloshing moment history are given. My sloshing case is a 2D rectangular tank with the filling ratio of 0.012, starting with an initial heeling angle of 8.151 degrees, and the simulated time span is 7 seconds when the first two impacts have taken place. The obtained simulation sloshing moments are compared with the quasi-static moment, while an image comparison is also conducted between the tank test images and the simulation animation to validate the simulation. The damping effect on the tank is studied in time domain. The sloshing moment does not always dampen the tank motion. And it gradually catches up with the quasi-static moment in term of time, while its amplitude decays along with the tank motion. The simulated water motion is satisfactory in general with limited unphysical phenomena. Understanding and experience of interDyMFoam throughout the usage are shared. Consequently, the thesis offers a both qualitatively and quantitatively good study on the shallow water sloshing in transient excitation motion. en
dc.format.extent 50+22
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Numerical investigation for the moment caused by shallow water sloshing under a transient roll motion en
dc.type G2 Pro gradu, diplomityö en Insinööritieteiden korkeakoulu fi
dc.subject.keyword shallow water sloshing en
dc.subject.keyword transient tank roll motion en
dc.subject.keyword 2D en
dc.subject.keyword CFD en
dc.subject.keyword OpenFOAM en
dc.identifier.urn URN:NBN:fi:aalto-201510164731
dc.programme.major Nordic Master in Maritime Engineering fi
dc.programme.mcode ENG3034 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Kujala, Pentti
dc.programme Konetekniikan koulutusohjelma fi

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