Cavitationonsetcausedbyacceleration ZhaoPan a,1 ,AkihitoKiyama b,1 ,YoshiyukiTagawa b,2 ,DavidJ.Daily c,1 ,ScottL.Thomson d ,RandyHurd a , andTaddT.Truscott a,2 a DepartmentofMechanicalandAerospaceEngineering,UtahStateUniversity,Logan,UT84322; b ...
Cavitation onset caused by acceleration 来自 国家科技图书文献中心 喜欢 0 阅读量: 147 作者:Z Pan,A Kiyama,Y Tagawa,DJ Daily,TT Truscott 摘要: Striking the top of a liquid-filled bottle can shatter the bottom. An intuitive interpretation of this event might label an impulsive force as the ...
However, this kind of cavitation number obviously can not reflect the pressure drop caused by the vortex rotation and the influence of the gas nucleus in the water body, and it is incomplete to reflect the cavitation factors in the vortex cavitation flow. The second type of cavitation number ...
The latter problem is due to the shape of the shaft, with the ellipsoidal fairing, which introduces flow acceleration. Nevertheless, it is believed that the obtained wake is reasonably close to the target. The overall values of the nominal wake fraction obtained in the position of the propeller...
The results at five streamwise locations were obtained by moving the entire SPIV system comprised of prisms, cameras and light sheet. The impression of the seal caused a deformation in the acrylic test section window, which was visible in the particle images and introduced errors in the vector ...
where QLa denotes the flow rate through the impeller (m3/s), kn represents the blockage caused by the hub (kn =1 − dn2/d12, dn = hub diameter), α1 is the angle between the direction of circumferential and absolute velocity (°), and β1 is the angle between the relative velocit...
The regions result from the flow acceleration around the suction side of the blade’s leading edge, which is caused by the geometrical curvature. Due to the short passage before the impeller inlet, only a small amount of energy can be added to the fluid converted from the mechanical energy ...
The cavitation onset may be different for the same cavitation number. However, the above literature focuses on improving the accuracy of numerical models to observe the subtle flow of water jets, which not only improves the accuracy of results but also increases the difficulty of calculation. This...
The cavitation number can be found by non-linear regression analysis of the main parameters affecting the intensity and threshold of creation of cavitation, allowing for correlating the onset of cavitation with the main parameters of the technological process (fluid characteristics and geometry of the ...
Cavitation inception, i.e., the onset of cavitation, is found to occur at a higher cavitation number for the case with the dissolved gases considered in the model (i.e., 1.69 versus 1.51). Nurick’s nozzle geometry (made of Lucite) was also analyzed by Lifante and Frank [44] in ...