A model for water-entry projectile with an open cavity

9th International Symposium on Cavitation

Zou, W.^1 ; Liu, H.^1

MOE Key Laboratory of Hydrodynamics, Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai, China^1

关键词: Air-to-water;    Cavity model;    Flexible model;    High speed water;    Numerical results;    Oblique water entries;    ON dynamics;    Rigidbody dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012176/pdf
DOI  :  10.1088/1742-6596/656/1/012176

来源: IOP

【 摘 要 】

Study on dynamics of a projectile running with a cavity in the process of water entry closely relates to the development of new generation of air-to-water vehicle. It becomes a key concern to develop a flexible model of the high-speed water-entry projectile. The projectile is modelled using the unsteady cavity model from Serebryakov in the frame of the rigid-body dynamics theory. Based on the model, without loss of generality, oblique water-entry projectile running with an open cavity is simulated, and numerical results are in good agreement with measured data available. The model proves effective and has a great potential to investigate ballistics of an air-dropped vehicle at the early stage of water entry.