摘要
本文将空腔分为涡旋流型空腔和非涡旋流型空腔,并在对涡旋流进行分类研究的基础上深入研究了外围启动型漩涡,论证了空间限制型涡旋流涡心最高流速和限制尺寸之间的关系,提出了漩涡空腔尺寸的估算公式,并据此对受空腔影响的原模型水力稳定性相似性进行了深入分析。
Cavitation cavities are divided into vortex flow type and non-vortex flow type and peripheral force-driven vortex flow is analyzed based on this classification in this paper.For space-limited vortex flow,a relationship between peak flow velocity and space size is demonstrated and an estimation formula for the cavity dimension of vortex cavitation is formulated.Similarity relationship of hydraulic stability between model and prototype turbines under the influence of cavitation cavity are analyzed thoroughly.
出处
《水力发电学报》
EI
CSCD
北大核心
2012年第6期249-252,108,共5页
Journal of Hydroelectric Engineering
关键词
水力机械
空腔
压力脉动
涡旋流
有旋流动
流速
环量
hydraulic machinery
cavitation bubbles conglomeration
pressure fluctuation
vortex flow
rotational flow
flow velocity
circulation
