Shear layer on a ventilated supercavity wall

Zou, Wang; Zhang, Xu

doi:10.1016/j.ijmultiphaseflow.2020.103504

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…However, the gas loss modeling of ventilated supercavity is a difficult problem that urgently needs to be solved, as it restricts the effectiveness and accuracy of the unsteady supercavity and hydrodynamic calculations of the ventilated SCAV. It has been found that the supercavity's internal gas enters into the wake through the shear layer on the supercavity surface [3][4][5][6], regardless of the tail gas entrainment mode. Therefore, a multi-fluid computational model is established to study the multiphase flow characteristics within the shear layer, and a universal shear-layer gas loss model (the SL model) is derived in our recent work [7].…”

Section: Introductionmentioning

confidence: 99%

“…It has been found that the supercavity's internal gas enters into the wake through the shear layer on the supercavity surface [3][4][5][6], regardless of the tail gas entrainment mode. Therefore, a multi-fluid computational model is established to study the multiphase flow characteristics within the shear layer, and a universal shear-layer gas loss model (the SL model) is derived in our recent work [7].…”

Section: Introductionmentioning

confidence: 99%

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Free motion characteristics of the ventilated supercavitating vehicles

Zou,

Gan

2024

J. Phys.: Conf. Ser.

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Supercavitation theory and technology are important methods for reducing the drag of underwater vehicles to achieve motion with high speed. A ventilated supercavitating vehicle can break the limitation of natural supercavitation on speed and ambient pressure and has broad application prospects. The presence of hydrodynamic forces only at the head and tail restricts the significant improvement of the motion performance of the vehicle. Therefore, this study improves the dynamic model of a supercavitating vehicle using a self-developed shear-layer gas loss model and simulates the vehicle’s level-free motions to reveal the motion characteristics and hydrodynamic distribution characteristics. Further, the effects of the cavitator as an important control surface on motion characteristics are analyzed by changing the cavitator diameter in numerical simulations. The results lay a theoretical foundation for designing control surfaces and motion control systems for the vehicle.

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