منابع مشابه
Unstable Cavitation Behavior in a Circular-Cylindrical Orifice Flow
The cavitation characteristics were experimentally investigated about long circular-cylindrical orifices of various throat lengths including the orifice with a trip wire. Especially, the shedding process of separated vortex cavity was examined in detail with the observation using high-speed photography. The cavitation impact was measured with an accelerometer. As a result, it is found that the ...
متن کاملInvestigating to Cavitation Behavior of Orifice Tunnel
Strong velocity scale effect on cavitation for orifice tunnels was revealed through comparing the results of model tests in vacuum tanks and that of prototype measurements at construction site. A new formula predicting incipient cavitation number of orifice rings is presented in this paper. The predicted data for the prototype scale are coincident well with the prototype measured one.
متن کاملStress-induced Cavitation in an Aperture Flow
Cavitation in an aperture flow in a flat plate is studied using viscous potential flow. The maximum tension criterion for cavitation used here was proposed by Joseph [Phy. Rev. E, vol. 51, pp. 1649–1650, 1995; J. Fluid Mech., vol. 366, 367–378, 1998]: “Liquids at atmospheric pressure which cannot withstand tension will cavitate when and where tensile stresses due to motion exceed one atmosphere...
متن کاملDistortion of Flow Measurement and Cavitation Occurs Due to Orifice Inlet Velocity Profiles
This analysis investigates the distortion of flow measurement and the increase of cavitation along orifice flowmeter. The analysis using the numerical method (CFD) validated the distortion of flow measurement through the inlet velocity profile considering the convergence and grid dependency. Realizable k-e model was selected and y+ was about 50 in this numerical analysis. This analysis also est...
متن کاملNumerical Simulation of Cavitation in Mixed Flow Pump
The purpose of this study is to investigate the performance and three-dimensional behavior of the flow in a mixed flow pump and the way cavitation phenomenon is affected by different parameters such as fluid temperature, pump speed and flow rate. Computational fluid dynamic software FLUENT 6.3 was utilized to simulate the whole flow field of the pump. RNG k-ε model combined with standard wall f...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2007
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.2750655