Results 41 to 50 of about 556 (201)
Predictive Control of a Supercavitating Vehicle Based on Time-Delay Characteristics
IEEE Access, 2021 Supercavitation technology can greatly improve the speed of underwater vehicles by reducing drag. However, the time-delay characteristic of a supercavitating vehicle presents control challenge.
Yuntao Han, Zhen Xu, Lianwu Guan
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Performance Comparison of Bow and Stern Rudder for High‐Speed Supercavitating Vehicles
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 To predict the hydrodynamic characteristics and supercavity shape of supercavitation flows, the numerical model including VOF, cavitation model, and turbulence models is presented and validated by a well‐established empirical correlation. The numerical method is then employed to simulate the high‐speed supercavitating vehicles with two different types ...
Chuang Huang +5 more
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Complexity, Volume 2020, Issue 1, 2020., 2020 Due to the complexity of the cavity/vehicle and oscillation characteristics, streamlined shape integrated design of conventional fully wetted vehicles is not suitable for supercavitating vehicles. In this paper, a set of design criteria is highlighted to optimize the length and streamlined shape of a conical section subjected to realistic design ...
Daijin Li +5 more
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Review of Numerical Calculation Research on Underwater Supercavitation Flow
水下无人系统学报, 2023 Supercavity technology is one of the key technologies for underwater high-speed vehicles as it can reduce their resistance and increase their speed.
Tiezhi SUN +3 more
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Ballistics of Supercavitating Projectiles
Advances in Military Technology, 2018 The article is focused on the development of the underwater ballistic model of a supercavitating projectile fired from an underwater firearm. The supercavitating flows and their influences on the ballistic characteristics of the projectile are studied.
D. Thai +5 more
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Impulsive Motion Inside a Cylindrical Cavity
Mathematics, 2020 Experimental studies of supercavitating models moving at speeds in the range from 400 m/s to 1000 m/s revealed a regime of bouncing motion, in which the rear part of an axisymmetric body periodically bounces against the free boundaries of the supercavity.
Yuriy Savchenko +2 more
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Nihon Kikai Gakkai ronbunshu, 2017 The numerical analysis on the flight stability of the underwater projectiles are performed using computational fluid dynamics code which consists of gas/liquid phases analysis, 2D calculation method.
Kohei OKUNO, Akiko MATSUO
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A Robust Impulsive Control Strategy of Supercavitating Vehicles in Changing Systems
Applied Sciences, 2018 Supercavitation is a hydrodynamic phenomenon in which an underwater body is almost entirely inside the cavity wall. Since the density of the gas is much lower than that of water, skin friction drag can be reduced considerably.
Jonghoek Kim
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Examining the Influence of the Water Entry Velocity of Projectiles on Supercavity Flow and Ballistic Characteristics under Wave Conditions [PDF]
Journal of Applied Fluid MechanicsIn this study, we aim to examine the influence of water entry velocity of a single and two tandem projectile(s) on the supercavitation flow and projectile loading under wave conditions using numerical simulation.
J. Chen +4 more
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Energy Science &Engineering, Volume 13, Issue 9, Page 4356-4370, September 2025.ABSTRACT This study establishes a full‐flow passage numerical model of an LNG submerged pump equipped with two‐stage splitter blades through three‐dimensional modeling. Numerical simulations validated by liquid nitrogen experiments demonstrate that at 1.4 times the design flow rate, the peak efficiency reaches 60.6%, with a maximum head of 194.93 m ...
Songyu Yao +4 more
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