| Sloshing is a phenomenon commonly observed in liquid motions. It usually happens in a partially filled liquid tank in movement. Almost all kind of self-driving vehicles are mounted with liquid tanks. Some kind of ships especially built for transporting liquid cargos, of which containers or tankers are a major part. When a container ship is traveling in rough seas, the dynamic behavior of her liquid cabin, its structure and the internal fluid, usually greatly influences the safety of the entire ship.A comprehensive review of the state of the art and the tendency for future advances in the field of sloshing mechanics is presented in the present thesis. It is believed that although lots have been remained for further study, to better embody the achieved development in sloshing research in the engineering applications, the critical pass is to better establish an appropriate analysis method of the coupled interaction between the sloshing fluids and the structure concerned. This method should include the affection of fluid viscosity, should be of the potential for treating the problem of turning, breaking and merging of surface waves, and should be able to predict the low frequency sloshing loads together with the transient impact loads in a unified manner. Meanwhile it is required to combine this method with a complicated structural dynamic system for safety assessment. In accordance with the existing research achievements, there are two aspects requiring for special attention and further research in depth. One is the interaction analysis of sloshing loads and the structural responses. The other is the coupled analysis of the interactions among a sophisticated system of the liquid sloshing, dynamic deformation of the cabin wall and the responses of the ship in waves. Aiming at the first aspect, the VOF method has been improved for description of the sloshing fluid field, and combined with the principle of hydroelasticity theories, to produce a theory and the corresponding numerical technique to deal with the coupled interactions between liquid sloshing and elastic structures. Also discussed is the application of the present method to a complicated dynamic system.The major results received in the present thesis are as follows.(1). The velocity boundary conditions of free surface cells included in the existing VOF method is modified for treating large amplitude sloshing;(2). With the conception of aperture, a computational method is provided for dealing with the static or moving interior obstacles in the fluid field.(3). Based on the established numerical method of sloshing analysis, the liquid sloshing characteristics in a rigid tank are calculated. In the calculation simulated is the oscillation of the free surface, sloshing with small and large amplitudes induced by a forced rolling movement, the effectiveness of the anti-sloshing structures in the tank, etc. The numerical results illustrate that the proposed method is correct in explaining the physical phenomena.(4). A hydroelasticity theory is established to describe the sloshing of viscous flow coupled with elastic structures. The generalized force items included in the equations of motion of the principle coordinates are discussed in detail. The procedures of solving the equations based on the Admas-Bashforth prediction-correction method and the time advancement technique are employed.(5). A series of calculations have been carried out by employing the proposed numerical method to predict the features of liquid sloshing in a rigid rectangular container. Free and forced sloshing phenomena are analyzed. Sloshing intensity occurred in a tank with or without baffle is discussed. The effects of different structural rigidities of the elastic tank to sloshing responses are simulated. The received results are helpful to better understand the physical phenomena.(6). The present method is applied to a complicated dynamic system of a 1:30 scale reduced model of the ship lift for the dam of Three Gorges. Combing the sloshing problem, the structure of...
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