Share This Article:

Air Entrainment and Pressure Fields over Stepped Spillway in Skimming Flow Regime

Abstract Full-Text HTML Download Download as PDF (Size:395KB) PP. 53-57
DOI: 10.4236/jpee.2014.24008    2,148 Downloads   2,869 Views   Citations


This paper deals with some aspects of the air entrainment process along the chute of spillway and study of pressure fluctuations. The experimental study has been carried out using stepped spillway model located in the campus of Government College of Engineering, Amravati (India). It is observed that air concentration is increasing with discharge as well as with number of step. Air concentration is increasing along the length of spillway. It is also observed that the bottom mean air concentration increases with step height in the upstream reach of stepped spillway, which is prone to cavitation. The pressure profiles exhibit a wavy pattern down the stepped chute and pressure on each step increases with ratio of critical depth to step height (yc/h).

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Dhatrak, A. and Tatewar, S. (2014) Air Entrainment and Pressure Fields over Stepped Spillway in Skimming Flow Regime. Journal of Power and Energy Engineering, 2, 53-57. doi: 10.4236/jpee.2014.24008.


[1] Buwa, V.V. and Ranade, V.V. (2005) Characterization of Gas-Liquid Flows in Rectangular Bubble Columns Using Conductivity Probes. Chemical Engineering Communications, 192, 1129-1150.
[2] Boes, R.M. and Hager, W.H. (2003) Two-Phase Flow Characteristics of Stepped Spillways. Journal of Hydraulic Engineering, ASCE, 129, 661-670.
[3] Pfister, M., Hager, W.H. and Minor, H.E. (2006) Bottom Aeration of Stepped Spillways. Journal of Hydraulic Engineering, ASCE, 132, 850-853.
[4] Boes, R.M. (2000) Zweiphasenstr?mung and Energieumsetzung auf Grosskaskaden (Two Phase Flow and Energy Dissipation on Cascades). Ph.D. Thesis, VAW, ETH Zurich. (In German)
[5] Matos, J., Sanchez, M., Quintela, A. and Dolz, J. (1999) Characteristic Depth and Pressure Profiles in Skimming Flow over Stepped Spillways. Proceeding of the 28th IAHR World Congress, Graz, Session B14, 6 p.

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.