Universal, cavity-shape-independent relations for cavitation flow with small cavitation numbers

1985 ◽  
Vol 25 (5) ◽  
pp. 758-766
Author(s):  
A. G. Petrov ◽  
N. B. Sotina
Keyword(s):  
Cavitation Flow ◽  
Cavity Shape

scholarly journals Numerical Simulation on the Cavitation Flow of High Speed Oblique Water Entry of Revolution Body

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Qing Mu ◽  
Yipin Lv ◽  
Kangjian Wang ◽  
Tianhong Xiong ◽  
Wenjun Yi
Keyword(s):  
Numerical Simulation ◽  
High Speed ◽  
Water Entry ◽  
Hydrodynamic Characteristics ◽  
Multiphase Model ◽  
Cavitation Flow ◽  
Entry Angle ◽  
Positive Direction ◽  
Cavity Shape ◽  
The Revolution

To explore the effects of water entry angle on the cavitation flow field of high-speed revolution body, based on the finite volume method, VOF (Volume of Fluid) multiphase model, Schnerr-Sauer cavity model, SST k-ω turbulence model, and dynamic mesh method, numerical simulation for modeling the oblique water entry of revolution body at high speed is performed. The evolution laws of cavity shape, motion characteristics, and hydrodynamic characteristics of revolution body at different water entry angles are analyzed. The results show that the numerical calculation method can effectively simulate the change of cavity shape during the water entry of the revolution body. With the increase of water entry angle, the uplift of liquid level decreases in the positive direction of the open cavity and increases in the negative direction. The angle of water entry has little effect on the velocity of the revolution body. The larger the angle of water entry, the greater the peak pressure and the faster the pressure decay at the moment of water entry.

Dependence of guest-binding ability on cavity shape of deformed cyclodextrins

1996 ◽  
Vol 37 (11) ◽  
pp. 1825-1828 ◽  
Author(s):  
Kahee Fujita ◽  
Yuji Okabe ◽  
Kazuko Ohta ◽  
Hatsuo Yamamura ◽  
Tsutomu Tahara ◽  
...  
Keyword(s):  
Binding Ability ◽  
Cavity Shape ◽  
Guest Binding

Uterine cavity shape and the best site for embryo transfer

2009 ◽  
Vol 105 (2) ◽  
pp. 140-144 ◽  
Author(s):  
Yingpu Sun ◽  
Lanlan Fang ◽  
Yingchun Su ◽  
Yihong Guo
Keyword(s):  
Embryo Transfer ◽  
Uterine Cavity ◽  
Cavity Shape

scholarly journals Effect of Impact Cavity Shape Induced by Supersonic Oxygen Jet on the Dynamic Characteristics of Molten Bath in Converter

2021 ◽  
Vol 92 (9) ◽  
pp. 2170091
Author(s):  
Jiankun Sun ◽  
Jiangshan Zhang ◽  
Wenhui Lin ◽  
Lingling Cao ◽  
Xiaoming Feng ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
Molten Bath ◽  
Cavity Shape

scholarly journals Numerical calculation for cavitation flow of inducer

2015 ◽  
Vol 72 (3) ◽  
pp. 032025
Author(s):  
C Ning ◽  
Y Wang ◽  
Z T Zhu ◽  
S F Xie ◽  
L F Zhao ◽  
...  
Keyword(s):  
Numerical Calculation ◽  
Cavitation Flow

Two Phase PIV Measurements at the Runner Outlet in a Francis Turbine

2003 ◽  
Author(s):  
Monica Sanda Iliescu ◽  
Gabriel Dan Ciocan ◽  
Franc¸ois Avellan
Keyword(s):  
Francis Turbine ◽  
Cavitation Flow ◽  
Two Phase ◽  
Piv Measurements ◽  
Turbine Runner ◽  
Physical Insight ◽  
Complex Phenomena ◽  
Hydro Turbines ◽  
Operating Regimes ◽  
Averaging Techniques

Part load operation of hydro turbines with fixed pitch blades causes complex instable cavitation flow in the diffuser cone. Application of PIV systems provides the opportunity to investigate the flow velocity and turbulent fields in the case of development of cavitation vortex, the so-called turbine rope, at the outlet of a Francis turbine runner. The synchronization of the PIV flow survey with the rope precession allows to apply phase averaging techniques in order to extract both the periodic velocity components and the rope layout. The influence of the turbine setting level on the volume of the cavity rope and its center is investigated, providing a physical insight on the hydrodynamic complex phenomena involved in the development of the cavitation rope at Francis turbine operating regimes.

Optimization of Underwater Cavity's Shape

2011 ◽  
Vol 291-294 ◽  
pp. 1925-1928
Author(s):  
De Xin Zhang ◽  
Xue Bo Shao ◽  
Li Lou ◽  
Lei Liu
Keyword(s):  
Drag Reduction ◽  
Cavitation Bubble ◽  
Decisive Role ◽  
Basic Research ◽  
Experimental Results ◽  
Bubble Shape ◽  
Cavitation Resistance ◽  
Cavity Shape ◽  
Submerged Body

The steady bubble shape as one of the basic research, plays a decisive role in the cavitation’s study, To study it clearly will be not only basis for the study of non-steady cavitation, but also provide the necessary basis for the design of the control for cavitation bubble. In this paper, cavity shape produced by submerged body is studied, and related to the use of foreign experimental results, super-cavitation resistance, drag reduction is discussed.

Cavitation flow instability of subcooled liquid nitrogen in converging–diverging nozzles

Cryogenics ◽  
2012 ◽  
Vol 52 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Katsuhide Ohira ◽  
Tadashi Nakayama ◽  
Takayoshi Nagai
Keyword(s):  
Liquid Nitrogen ◽  
Flow Instability ◽  
Cavitation Flow ◽  
Subcooled Liquid
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