Numerical Simulation of Characteristics of Cavitation and Aeration in Free-flow Tunnel

DOI

10.2991/icmce-14.2014.21How to use a DOI?

Keywords

Free-flow Tunnel, Cavitation, Aeration, Realizable k- Model, Volume of Fluid.

Abstract

Outlet structures were apt to occur cavitation damages with high speed flow, and aerators were usually adopted to reduce and eliminate cavitation damages in hydropower project. In this paper, the Realizable k- model and the Volume of Fluid method were used to simulate the characteristics of cavitation and aeration of the free-flow tunnel in Baihetan Hydropower Station. The distributions of water surface profile, pressure, flow velocity and cavitation number were gained. The results show that the Realizable k- model and VOF method were good at simulating the aerated flow of the free-flow tunnel. Aerators position is the main reason for the changes of velocity distribution in a cross section. The design parameters of the free-flow tunnel in Baihetan Hydropower Station are reasonable by the stable aerated cavities and the suitable length

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yang XUE
AU  - Zhi-Ping LIU
AU  - Jian-Rong XU
AU  - Yu PENG
PY  - 2014/12
DA  - 2014/12
TI  - Numerical Simulation of Characteristics of Cavitation and Aeration in Free-flow Tunnel
BT  - Proceedings of the 2014 International Conference on Mechanics and Civil Engineering
PB  - Atlantis Press
SP  - 116
EP  - 121
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmce-14.2014.21
DO  - 10.2991/icmce-14.2014.21
ID  - XUE2014/12
ER  -