掺气分流墩墩头的动水压强特性研究  

Study on the Characteristics of Hydrodynamics Pressure on the Front of Aeration-Baffle

作　　者：张宗孝[1] 马斌[1] 魏文礼[1] 

机构地区：[1]西安理工大学,西安710048

出　　处：《应用力学学报》2001年第3期54-59,共6页Chinese Journal of Applied Mechanics

摘　　要：对掺气分流墩墩头的动水压强特性进行了试验研究 ,以求了解墩头的抗空蚀性能及动水压强特性。试验结果得出 :时均压强P/Pmax沿墩高和Cp 沿横断面的分布规律 ;墩头轴线与来流有夹角时Cp 沿横断面的分布规律 ;墩头壁压脉动压强特性 ;在墩后充分供气时 。Experimental researches of characteristics of hydrodynamic pressure on the front of aeration-baffle are presented in this paper to obtain the properties of the aeration-baffle resistant to cavitation. The experimental results provide the f o llowing: the law of distribution of mean pressure P/P max in the vertic al direction and of mean pressure coefficient C p on the cross-section of a eration-baffles; the law of distribution of C p on the cross section when the flowing direction is not parallel to the axis of the aeration-baffle; the c h aracteristics of fluctuating pressure on the front surface of the aeration-baff l e and the characteristics of cavitation of the front of the aeration-baffle whe n air is completely aerated from the back of the aeration-baffle.

关 键 词：掺气分流墩 墩头 脉动压强 时均压强 空化特性 动水压强 消能 

分 类 号：TV135.2[水利工程—水力学及河流动力学] TV131