Investigation on Wall-Pressure Fluctuation
The characteristics of wall-pressure fluctuation affected directly the safety of hydraulic structure like a dam and an apron. Wall-pressure fluctuation signals acting on smooth boundary, the guiding-wall of stilling basin and on the bottom by impinging jet were obtained by model tests. Moreover, proper orthogonal decomposition and low-dimensional approximation method was adopted to study wall-pressure fluctuation. The features of characteristic values and expansion coefficients coming from proper orthogonal decomposition of wall-pressure fluctuation were argued, and the low-dimension approximation of spectrum function was also discussed. The results made it clear that the wall-pressure fluctuation could be described with the method of proper orthogonal decomposition, and the low-dimension approximation of spectrum function was also effective.
turbulence wall-pressure fluctuation proper orthogonal decomposition low-dimensional approzimation
Lu jing Meng Xue-jun
Wuhan University, Wuhan China, 430072
国际会议
西安
英文
1-13
2005-11-01（万方平台首次上网日期，不代表论文的发表时间）