Results 51 to 60 of about 123 (91)
학위논문(석사) - 한국과학기술원 : 기계공학과, 2024.2,[iii, 32 p. :]이 연구에서는 2차원 환기 초공동에 대한 실험을 진행하였다.평판은 정지된 유체의 자유 표면 근처에서 일정한 속도로 이동한다. 움직이는 평판의 아랫면의 전연에 직사각형 모양의 케비테이터가 수직으로 부착되었고, 케비테이터의 뒤에 압축된 공기가 주입되었다. 관련된 무차원 수는 프루드 수, 공기 유입 계수, 공동 수이다.
남정현, Nam, Jeong-Hyeon
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Formation and steady flow characteristics of ventilated supercavity with gas jet cavitator
, 2017 Tao Bai, Yunhua Jiang, Ye Gao
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Research on the gas-leakage rate of unsteady ventilated supercavity
Journal of Hydrodynamics, 2010 Abstract The mechanism of gas-leakage is a basic problem of the unsteady ventilated supercavitation theory. This paper is devoted to the problem and presents a calculation formula of gas-leakage rate. The rate of volume change of supercavity is numerically calculated based on Logvinovich's Principle and the empirical formula.
Wang Zou, Kai-ping Yu, Xiao-hui Wan
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A study on the wake structure of the double vortex tubes in a ventilated supercavity
Journal of Mechanical Science and Technology, 2018 To study the wake structure of the double vortex tubes in a ventilated supercavity, the computational fluid dynamics (CFD) method based on the finite volume method and the volume of fluids (VOF) multiphase flow model were used to solve the Reynolds-averaged Navier-Stokes (RANS) equations for performing numerical simulation analysis on the wake ...
Wei Wang +3 more
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Study of the Parameters of a Ventilated Supercavity Closed on a Cylindrical Body
, 2011 The paper reports the procedure and results of an experimental study of ventilated supercavities on axisymmetric bodies of various geometries in a water tunnel. Hysteresis processes for variously shaped model bodies are considered. The results of recording of unsteady processes of cavity size variation caused by gas injection shutoff are presented. The
Yu. D. Vlasenko, G. Yu. Savchenko
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Similarity law of flowrate for hot-gas ventilated supercavity flows
Journal of Hydrodynamics, 2010 Based on the complete sets of similarity criteria for modelling experiments of exhausted-hot gas ventilated supercavity flows which had been derived by author before, considering the effects of phase changes, a similarity law of flowrate for ventilated hot-gas supercavity flows is found and described in this paper.
Jiu-xi Chen
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Shear layer on a ventilated supercavity wall
International Journal of Multiphase Flow, 2021Abstract The shear layer on a supercavity wall is the gas entrainment channel to wake flow for ventilated supercavitating flows with various tail closure modes. To thoroughly understand the gas loss mechanism and the relationship between the gas loss mechanism and dynamic stability of the flows, the flow structures and associated characteristics in ...
Wang Zou, Xu Zhang
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Experimental Study of Ventilated Supercavity on an Axisymmetric Model
Proceedings of the 8th International Symposium on Cavitation, 2012 Zhi Wang +5 more
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Noise generated by ventilated supercavities
Noise Control Engineering Journal, 2015The noise generated by ventilated supercavities has been explored experimentally in a water tunnel facility. The most prominent acoustical characteristic is the monopole behavior exhibited by a ventilated supercavity in its pulsating closure regime.
Grant M. Skidmore +3 more
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