Numerical simulation and experimental study of ventilated supercavity of underwater projectile

作者：Jin Da Qiao^*; Wang Cong; Cao Wei; Zhang Jia Zhong; Zou Zhen Zhu

来源：Acta Armamentarii, 2011, 32(10): 1184-1188.

• Cavitation number
• Cavity shape
• Equilibrium flow
• Experimental studies
• Muzzle velocity
• Supercavitation
• Supercavity
• Underwater projectile
• Velocity decay

Fluent 6.3 was applied to simulate the ventilated supercavity of underwater projectile based on the homogeneous equilibrium flow theory. The experiments of underwater ventilated projectile were made by using the projectile device, and the ventilated supercavities of underwater projectile were obtained at 50 m/s and 70 m/s. More ventilation is needed to form the supercavity with the decrease in the cavitation number, and the tail of ventilated supercavity is not closed. The drag coefficient decreases greatly after a supercavity forms, and the drag coefficients nearly remain the same at different velocity. Compared with unventilated projectile, the ventilated supercavitation projectile have small velocity decay rate and longer displacement under the condition of the same muzzle velocity.

• 出版日期2011