物体入水沉降运动的机理分析

Entry water is widely used in the field of Naval Architecture and Ocean Engineering; an appropriate way of entering water could be of great significance for the security of ships and structures. As an important part of the whole process, some specific research on entry water is very necessary. In this essay, a model based on Newton's laws of motion and Stokes viscous equation is established. With numerical calculations conducted by MATLAB which was used as a tool, the physical processes of entry water of sphere (spherical shell) were simulated. The data is consistent with the results of practical experience, verifying the feasibility of the model. Results based on the model proves that a computable critical value of velocity of objects' submersion exists. This study has some significant reference value for ship launching technology.