Experimental investigation of the influence of floating ices constraint on the cavity dynamics of an axisymmetric body during the water exit process

Abstract

The process of water exit in an ice-constrained environment involves complicated gas-liquid-solid multiphase turbulence flows. This paper considers the effects of the floating ices during the water exit process of a cone-shaped axisymmetric test body with an acceleration sensor and a pressure sensor. The cavity evolution, motion features and dynamics loads are addressed based on the simultaneous measurement system. The results show that the water exit process is divided into three stages, and the evolution patterns of the flow field and motion characteristics of the vehicle are closely related to the free water surface. The cavity evolution, movement characteristics and pressure loads during the water exit process of the vehicle are related to the existence of crushed ice. The existence of crushed ice has an effect on cavity dynamics. Especially, the blocking and restraining effects are mainly concentrated in the process of the vehicle crossing the free water surface.