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Study on model optimization and simulation of sand castles foundation

Going on the beach to relax and build sand castles is a very common leisure and entertainment project. Some sand castles can even be called works of art, and sand castles are built. There are many factors to be strong enough. In order to build a constant position from the sea, the type of sand used, the amount of sand used, and the ratio of sand to water, the best sand can last for the longest time after experiencing waves and tides. For the three-dimensional shape of the fort foundation, a two-dimensional flow model and a two-dimensional sand castle model is constructed in this paper. There are two factors that affect the flow movement and the shape of the sand castle foundation, that is, the critical shear stress and the current the bottom shear force under the action. The variables that affect these two factors are the elevation of the foundation and the roughness of the bottom surface. It is found by the formula that the higher the foundation, the greater the critical force of sand deposition and the longer the roughness of the ground. And then, under the condition of the same volume, the foundation with circular and square bottom surface is used to obtain the most solid foundation shape under the influence of the height of the foundation and the rough length of the bottom surface.