首页 | 本学科首页   官方微博 | 高级检索  
     检索      

深埋隧道地震动力响应的复反应分析
引用本文:何友声,刘桦,赵岗.深埋隧道地震动力响应的复反应分析[J].力学学报,1997,29(1):1-7.
作者姓名:何友声  刘桦  赵岗
作者单位:上海交通大学工程力学系,200030
摘    要:采用高速摄影技术对定常来流中NACA4412翼的不稳定的空泡流形态特征进行了水洞试验研究.试验结果揭示了由于空泡形态断裂而产生的低频脉动现象.这一现象在跨空泡流(Trans-cavitatingflow)情况下尤为明显,常使空泡长度和厚度在大幅范围内拟周期地变动,其频率特性比较稳定,有别于空泡末端局部泡团脱落而产生的脉动

关 键 词:复反应法  动力响应  复模量  深埋隧道
收稿时间:1996-12-26

A STUDY ON PULSATION OF TWO-DIMENSIONAL CAVITATING FLOW
He Yousheng,Liu Hua,Zhao Gang.A STUDY ON PULSATION OF TWO-DIMENSIONAL CAVITATING FLOW[J].chinese journal of theoretical and applied mechanics,1997,29(1):1-7.
Authors:He Yousheng  Liu Hua  Zhao Gang
Institution:Chengdu Institute of Technology, Chengdu 610059
Abstract:The unsteady behavior of a two-dimensional cavitating flow around a NACA4412 foil is investigated in a cavitation tunnel by using the high-speed photography. The high speed photographic records show that there is a low frequency pulsating phenomenon caused by the abrupt breakup of cavity. This pulsation of cavitating flow appears significantly in case of the trans-cavitating flow and results in the pseudo-periodic evolution of cavity length and cavity thickness. The frequency characteristics of the low-frequency pulsation seems to be stable and is different from the pulsation caused by the local breakupof the cavity at its tail zone.
Keywords:cavitating flow  trans-cavitating flow  breakoff  pulsation  high-speed photography  
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《力学学报》浏览原始摘要信息
点击此处可从《力学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号