Study on the Evolution of Flow Field and Load Characteristics of Ventilated Water-exit Vehicle in Crushed Ice Environment
To investigate the influence of crushed ice on the water-exit process of underwater vehicles,a numerical model using the computational fluid dynamics(CFD)method is developed,which is incorporated with overlapping grids technique and contact coupling algorithm.The model explicitly considers the collision between the vehicle and sea ice,and its validity is established through comparison with existing experimental data.Employing this established numerical method,we analyze the motion characteristics and evolution of the flow field during the water-exit process in the presence or absence of crushed ice.Our findings reveal that crushed ice significantly enhances the evolution of the flow field,and modifies the collapse form and evolution process of the ventilating cavity.Moreover,the motion characteristics and surface load evolution of the vehicle are closely correlated with the presence of crushed ice.
vehicle water-exitcrushed ice environmentevolution of flow fieldload characteristics
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