Research On The Impact Characteristic Of The Structure Water Entry

Impact of the water entry issue has been a hot research topic between the water entry,the research of the water entry is very important for the water buffer technology.The water entry is a complex structure of the gas-liquid-solid coupling process,theoretical research is very difficult,the early research of water entry is based on experimental research.In recent years,with the development of numerical simulation technology,it has become the main research method of the water entry.This paper is focused on the characteristic of the impact during the water entry.First study of the process and mechanical phenomena of the water entry,resulting impact load factors of the water entry,and then based on different factors affect the impact characteristics to do targeted research.Make a feasibility study on the numerical simulation method of the water entry,the main research is the method of computational fluid dynamics,the multiphase flow model and the dynamic mesh.The study on the impact of water entry,can provide a theoretical basis for numerical simulation.Apply fluent dynamic mesh method combined and the VOF model on the numerical simulation of the water entry.Establishing numerical simulation model of the water entry,then solving the water entry.Comparing the dimensionless drag coefficient curve,the peak load size,the width of the peak load and the partial load points,then get the results of the water entry.