首页 | 本学科首页   官方微博 | 高级检索  
     


Recirculating Flow in Oscillatory U-Tubes
Authors:Jason L. Miller  David E. Werth
Affiliation:1Former Graduate Student, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634-0911.
2Assistant Professor, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634-0911.
Abstract:Wastewater treatment facilities often experience undesirable oscillations in water surface elevations due to the potential of unsteady outlet flow. Self-induced oscillations, particularly those generated by the geometry and flow conditions of treatment facilities with a U-tube component, are of particular interest. This study focuses on the U-tube component of an existing wastewater treatment facility where oscillations of constant amplitude and period were observed shortly after the facility was operational. It is assumed that an oscillating U-tube manometer represents this problem, and a numerical model was developed to predict the amplitude and period of the oscillations using Newton’s second law of motion and momentum analysis. A 1-to-4.88-scale physical model of the existing facility was constructed and tested. Numerical model results show good agreement with measured oscillatory characteristics of the existing facility and the physical model.
Keywords:Oscillatory flow  Numerical models  Model studies  Drop structures  Water treatment plants  Unsteady flow  
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