摘要
本文研究了具有粘弹性支撑的平板上均匀势流中的稳定性问题。在研究中采用基于空间—时间稳定性理论的映射法去搜寻绝对不稳定特征模态。研究结果表明 ,当支撑刚度足够小时总是会有不稳定发生。对于纯弹性支撑 ,尽管有不稳定 ,但它并不是绝对不稳定 ;而对于粘弹性支撑 。
The instability of a uniform potential flow over a plate with viscoelastic supports was investigated. A mapping technique, based on a spatio-temporal analysis was applied to search the absolute instability eigenmodes. It is found that the instability occurs as the support stiffness is enough low. It is concluded that for a purely elastic support, the instability is only temporal, but not absolute; for a viscoelastic support, the instability is always absolute.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2002年第2期197-203,共7页
Chinese Journal of Hydrodynamics
