Results 1 to 10 of about 72 (67)

Influence of Flow Field's Radial Dimension on Ventilated Supercavitating Flow [PDF]

Xibei Gongye Daxue Xuebao, 2020
To investigate the influence of flow field's radial dimension on the flow of the portion gas-leakage supercavity, based on the two-fluid multiphase flow model and SST turbulence model, considering the compressibility of ventilated gas, a 3D simulation ...
Y. J. Wei, W. Cao, C. Wang, J. Z. Zhang, Z. Z. Zou   +4 more
doaj   +3 more sources

Shape of Slender Axisymmetric Ventilated Supercavities [PDF]

Journal of Computational Engineering, 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
openaire   +2 more sources

Numerical investigation of supercavity geometry and gas leakage behavior for the ventilated supercavities with the twin-vortex and the re-entrant jet modes

International Journal of Naval Architecture and Ocean Engineering, 2021
To investigate the supercavity geometry and gas flow structure for the supercavities with two closure types under the different flow conditions, an inhomogeneous multiphase model with the SST turbulence model was established, and validated by ...
Haiyu Xu, Kai Luo, Jianjun Dang, Daijin Li, Chuang Huang   +4 more
doaj   +2 more sources

Variation Characteristics of Formation and Development of Ventilated Supercavity at Low Froude Numbers

Shanghai Jiaotong Daxue xuebao, 2021
To study the variation characteristic of supercavity shape and gas-leaking mode in the initial generation and development process of a ventilated supercavity, a 3-D numerical model considering the compressibility of the ventilated gas and gravity effect ...
XU Haiyu, LUO Kai, HUANG Chuang, ZUO Zhenhao, GU Jianxiao
doaj   +2 more sources

Experimental and Numerical Research on the Formation Conditions and Entrainment Characteristics of Supercavity by Rear Jet Reflux [PDF]

Journal of Applied Fluid Mechanics, 2022
Aiming at better controlling the ventilated supercavity flow for drag reduction, the experimental and numerical researches of supercavity by rear gas reflux are proposed in this paper.
B. Liu, M. Xiang, X. Zhao, W. Zhang, J. Li   +4 more
doaj   +1 more source

Numerical Investigation on the Ventilated Supercavity around a Body under Free Surface Effect

Journal of Marine Science and Engineering, 2023
Reducing vessel resistance by using ventilated cavities has been a highly researched topic in the marine industry. There is limited literature on ventilated supercavities near the free surface, which indicates that their dynamic behavior is more complex ...
Yuchang Zhi, Jiemin Zhan, Renfang Huang, Yiwei Wang, Ning Li   +4 more
doaj   +1 more source

Influence of attack angle on ventilated supercavitating flow at high Froude number condition

Xibei Gongye Daxue Xuebao, 2022
To study the influence of attack angle on ventilated supercavitating flow, a numerical model is established to simulate the supercavitation flow by using the inhomogeneous multiphase flow model and the SST k-ω turbulence model.
WANG Yifei, DANG Jianjun, HUANG Chuang, XU Haiyu, ZUO Zhenhao   +4 more
doaj   +1 more source

Experimental investigation of ventilated supercavitation behind cone-shaped with different angles and disk-shaped cavitators

International Journal of Naval Architecture and Ocean Engineering, 2022
This paper systematically investigates the effect of the cavitator shape on the characteristics of a ventilated supercavity. These characteristics include ventilation demand, pressure behavior, and deformation of the supercavity due to gravity under ...
Van-Duyen Pham, Ji-Woo Hong, Ali Kareem Hilo, Kiseong Kim, Byoung-Kwon Ahn   +4 more
doaj   +1 more source

Design of Particle Swarm Optimization Adaptive Sliding Mode Controller Based on an Extended State Observer for the Longitudinal Motion of a Supercavitating Vehicle with Input Saturation

Journal of Sensors, Volume 2023, Issue 1, 2023., 2023
The aim of this paper is to present a novel sliding mode control scheme for the supercavitating vehicle trajectory tracking problem that subjects to external disturbances and actuator saturation with two symmetric elevators and a cavitator as actuators by analytical methods and computer simulations. Firstly, the nonlinear and highly coupled dynamic and
Guang Yang, Faxing Lu, Ling Wu, Junfei Xu, Nageswara Lalam   +4 more
wiley   +1 more source

Bow and Stern Control Surface’s Effectiveness and Influence on Supercavity

Journal of Sensors, Volume 2021, Issue 1, 2021., 2021
The numerical model of supercavitating flow field was established based on multiphase model, cavitation model, and turbulence model. The model was employed to simulate the supercavitation flow for the supercavitating vehicle with two types of control surfaces: bow rudder and stern rudder.
Ping Wei, Wenrong Yan, Shoufa Wang, Xin Yu, Min Xia   +4 more
wiley   +1 more source