Sloshing exists as a physical phenomenon wherever a confined liquid experiences dynamic forces. The reaction forces and moments experienced by a container due to a sloshing fluid are often greater in magnitude than the reaction forces determined by assuming an equivalent rigid cargo, and the phase difference relationship between vehicle acceleration and reaction forces can affect vehicle stability. This research is being conducted in the context of ocean vessels, with the design and analysis of roll stabilization systems the primary application. This article presents a Finite Volume Method (FVM) developed to simulate the sloshing behaviour of incompressible, constant density liquids in a two-dimensional, rigid rectangular tank given a specified motion. The inertial accelerations caused by the tank motion are applied to the fluid by the inclusion of additional source terms in the momentum equations. The method can accommodate the simultaneous translation and rotation of the tank relative to an absolute reference frame, and rotation of the tank with respect to a frame attached to it. The free surface is modelled using the Volume of Fluid (VOF) method, which permits arbitrary movement of the surface. The capability of the method to predict small amplitude free surface oscillations at natural frequency, free surface motion over several grid cells, and free surface motion in tank undergoing combined translation and rotation is demonstrated.
Simulation of two-dimensional sloshing in tanks undergoing arbitrary motion
Simulation des zweidimensionalen Treibstoffschwappens in Tanks bei beliebiger Bewegung
1996
8 Seiten, 7 Bilder, 11 Quellen
Aufsatz (Konferenz)
Englisch
Tankcontainer , Kraft , Dynamik , Simulation , Moment , Fahrzeug , Beschleunigen , Rollstabilität , Schiff , Flüssigkeit , Inkompressibilität , Impulsgleichung , Translation , Rotation (Drehung) , Rahmen , Schwingung , Eigenfrequenz , Phasendifferenz
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