Study Of The Interaction Of Moving Bodies Through Two-phase Medium Of Ice And Water

Along with the gradual opening of the Arctic shipping lanes,the oil and gas resources in the Arctic circle have been exploited,and their strategic position has been highlighted.The mutual integration of crushed ice,ice floes and water is a special feature of the Arctic shipping lanes,while the uniqueness of submarine launched missiles is the most strategic deterrent for maintaining the safety of shipping lanes.This project uses moving bodies to simulate submarine missiles,mainly to study the movement of moving bodies under the coupling of ice and water,to reveal the mechanism of the interaction crushed ice and water and between crushed ice and moving bodies induced by moving bodies crossing the ice-water mixing zone,and to lay the foundation for the cutting-edge application of moving bodies crossing the icewater mixing zone.In order to study the interaction between a moving body and the ice-water medium,a numerical simulation of a moving body crossing an ice-water mixture was carried out using the coupled Euler-Lagrange method,which analyses the shape of the moving body’s head,the aspect ratio,the cavitation effect induced by the initial velocity of the moving body entering the ice-water mixture,the characteristics of the flow field,the stress on the broken ice in the flow field,the interaction forces between broken ice and broken ice,and The resistance characteristics between the two.A simulated experimental test system for moving bodies crossing a mixture of ice and water was also constructed,with the following main conclusions.At the same velocity,a moving body with a truncated head shape interacts with the ice-water medium in a more cylindrical shape than a moving body with a cylindrical head shape,reducing the speed at which the envelope forms a cavity around itself and the diffusion of the vacuole,which forms a cavity around itself with a larger diameter and a greater convective field stress acting on the broken ice than the former;however,the effect on the pressure of the convective field is less pronounced than that of a moving body with a hemispherical head shape,and the resistance to the ice-water medium is greater than that of a moving body with a cylindrical head shape.The former;moving bodies with larger aspect ratios maintain the relative stability of the cavity they form around themselves and the stress on the flow field acting on the broken ice,and are more resistant to the ice-water medium than moving bodies with smaller aspect ratios;the greater the initial velocity with which a moving body enters the ice-water mixture,the more pronounced the effect on the cavity formed around it,the pressure in the flow field and the stress on the flow field acting on the broken ice,and the greater the resistance to the ice-water medium.The initial velocity is that of a moving body at low speed.At the same time,an experimental study was carried out using a simulation system for ice-water mixtures to test the interactions between moving bodies and the ice-water medium under typical operating conditions,and the numerical simulation results basically agree with the experimental results.