Results 51 to 60 of about 271 (131)
Shape of Slender Axisymmetric Ventilated Supercavities
Journal of Computational Engineering, Volume 2014, Issue 1, 2014., 2014 The integral‐differential equation was obtained to simulate unsteady evolutions of the slender axisymmetric ventilated supercavity with the use of one‐dimensional inviscid flow of the incompressible gas in the channel between the cavity surface and the body of revolution.
Igor Nesteruk, Fu-Yun Zhao
wiley +1 more source
Nonlinear analysis of dynamic stability for the thin cylindrical shells of supercavitating vehicles
Advances in Mechanical Engineering, 2016 The dynamic stability of supercavitating vehicles under periodic axial loading is investigated in this article. The supercavitating vehicle is simulated as a long and thin cylindrical shell subjected to periodic axial loading and simply supported ...
Hai An, Ling Zhou, Xing Wei, Weiguang An
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Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil
International Journal of Rotating Machinery, Volume 2012, Issue 1, 2012., 2012 The objective of this paper is to evaluate the predictive capability of three popular transport equation‐based cavitation models for the simulations of partial sheet cavitation and unsteady sheet/cloud cavitating flows around a stationary NACA66 hydrofoil.
Antoine Ducoin +3 more
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Investigation of Boundary Effects on the Natural Cavitating Flow around a 2D Wedge in Shallow Water
Modelling and Simulation in Engineering, Volume 2011, Issue 1, 2011., 2011 When a cavitated body moves in shallow water, both flexible free surface and rigid bottom wall will produce great influence on the cavity pattern and hydrodynamics to change the motion attitude and stability of the body. In this paper, a single‐fluid multiphase flow method coupled with a natural cavitation model was employed to study the effects of two
Xin Chen +4 more
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Delay-dependent control design for a time-delay supercavitating vehicle model
, 2010 By extending a widely cited benchmark model on the pitch-plane dynamics of a supercavitating vehicle, recent literature has proposed new models that include the memory effect in characterizing the interaction of the supercavitating vehicle and the ...
null Qian Wang, null Xiaofeng Mao
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Modeling, Robust Control, and Experimental Validation of a Supercavitating Vehicle [PDF]
, 2015 University of Minnesota Ph.D. dissertation. June 2015. Major: Aerospace Engineering and Mechanics. Advisors: Roger Arndt, Gary Balas. 1 computer file (PDF); xii, 102 pages.This dissertation considers the mathematical modeling, control under uncertainty,
Escobar Sanabria, David
core
Adaptive fault-tolerant control for longitudinal motion of supercavitating vehicles [PDF]
, 2021 A supercavitating underwater vehicle uses gas or vapor to reduce its skin friction enabling it to travel up to speeds of 200 m/s. However, traveling at extreme speeds can be challenging for control design since sudden disturbances or faults, even for a ...
Biggs J. D., Ding Y., Bai Y., Zhang Z.
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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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Planing Avoidance Control for a Supercavitating Underwater Vehicle Based on Potential Functions
한국해양공학회지, 2018 In this paper, we focus on planing avoidance control for a supercavitating underwater vehicle based on the potential function method. The planing margin can be calculated using the relative position between the cavity center and vehicle center at the end
Seonhong Kim +4 more
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水下无人系统学报The water exit process of vehicles is very complicated, accompanied by multiphase flow, cavitation, phase transition, and turbulence instability, and the applied force is highly unsteady and nonlinear. At present, studies on the water exit problem of the
Yue CHU +5 more
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