Results 11 to 20 of about 123 (91)
Numerical study of hot-gas ventilated supercavitating flow
International Journal of Naval Architecture and Ocean Engineering, 2022 This paper describes a numerical investigation of the characteristics of supercavitating flow using hot gas. The numerical results are validated through an experimental study under the same conditions at Chungnam National University Cavitation Tunnel ...
Van-Duyen Pham +3 more
doaj +2 more sources
Investigation of the Behavior of Ventilated Supercavities [PDF]
Journal of Fluids Engineering, 2010 A study has been carried out to determine various aspects of the flow physics of a supercavitating vehicle at the Saint Anthony Falls Laboratory (SAFL). For the experimental work presented here, artificial supercavitation behind a sharp-edged disk was investigated for various model configurations.
Ellison Kawakami, Roger E. A. Arndt
core +3 more sources
Numerical study of cavitator angle effect on ventilated supercavitating flow
Engineering Applications of Computational Fluid Mechanics, 2023 Despite decades of rigorous research into supercavitating flow, there is still a lack of in-depth knowledge on the properties of ventilated supercavitation with cavitators of varying angle of attack.
Van-Duyen Pham +4 more
doaj +2 more sources
Xibei Gongye Daxue Xuebao, 2019 Based on the principle of independence of cavity sections expansion, a double disc cavitator for underwater projectiles is proposed in this paper.The high-speed water tunnel experiment is carried out to study the generation and morphological ...
doaj +2 more sources
A Method of Mitigating Pulsation in Ventilated Supercavities [PDF]
Journal of Physics: Conference Series, 2015 A method for mitigating ventilated supercavity pulsation is presented. The method, which has its roots in parametric oscillators, shifts the supercavity resonance frequency by modulating its gas ventilation rate. When appropriately modulated, the supercavity is driven off resonance by the waves on the gas/water interface (that remain unchanged) and ...
Grant M Skidmore +3 more
openaire +3 more sources
Formation and development of ventilated supercavity past the disk–cavitator in accelerated motion
Mechanics and Advanced Technologies, 2023 The work is devoted to both the experimental studies and the computer simulation of the process of formation and development of a ventilated supercavity past the disk-cavitator in accelerated motion from the state of rest to the steady velocity.
Olena Naumova +3 more
doaj +3 more sources
International Journal of Naval Architecture and Ocean EngineeringIn this study, physical aspects of a ventilated supercavity behind different cavitator geometries such as the hydrodynamic characteristics, distribution of pressure within the cavity, hysteresis phenomenon, and gas leakage mechanism were qualitatively ...
So-Won Jeong +3 more
doaj +2 more sources
Gas entrainment behaviors in the formation and collapse of a ventilated supercavity [PDF]
Experimental Thermal and Fluid Science, 2016 Abstract The present work reports some interesting gas entrainment behaviors in the formation and collapse of a ventilated supercavity under steady and unsteady flow conditions. Our experiments show that the gas entrainment required to establish a supercavity are much greater than the minimum gas entrainment required to sustain it, and these gas ...
Ashish Karn +2 more
openaire +2 more sources
Experimental investigation of combustion hot-gas ventilated supercavitation
International Journal of Naval Architecture and Ocean Engineering, 2022 Most of experimental and numerical studies on ventilated supercavitation have been focused on injection of room temperature air. However, in this work, the effect of combustion hot-gas over 1200 K on characteristics of the supercavity was investigated ...
Van-Duyen Pham +2 more
doaj +1 more source
AIP Advances, 2021 The objective of this paper is to investigate the effect of two typical supercavity flow patterns (double-cavity and wake-closure) on ventilated supercavity geometry and supercavitating flow structure and further reveal the different mechanisms of gas ...
Haiyu Xu +5 more
doaj +1 more source