Bottom roller characteristics in cavity of chute aerators

Abstract

For the size estimation of the bottom roller, it is crucial to select the control volume (CV) used in the momentum equation and to calculate the velocities entering and leaving the CV. These aspects are taken into account in the present work. A pragmatic method is provided and its accuracy is examined through the comparison with data from previous physical model experiments and other CV analyses.

Keywords:

• Aerator
• air entrainment
• bottom roller
• cavitation damage
• cavity
• control volume

Acknowledgements

This research has been financially supported by the National Natural Science Foundation of China (Grant No. 50879021), and the Innovative Project of Graduate Student in Jiangsu Province (Grant No. CXLX11_0443).