Effect of guide vane on pressure fluctuation and radial force in hydraulic turbine

DOI

10.2991/aest-16.2016.54How to use a DOI?

Keywords

hydraulic turbine; guide vane; pressure fluctuation; radial force; numerical analysis.

Abstract

An unsteady three-dimensional simulation based on Reynolds time-averaged control equations and RNG k- turbulence model is presented for hydraulic turbines, and the pressure fluctuation and radial force characteristic of hydraulic turbines are obtained. The results obtained show that the time domain of pressure fluctuation for hydraulic turbine varies periodically, the greater the flow rate, the more serious the pressure fluctuation, the dominant frequencies of pressure fluctuation concentrate at low frequency region. After adding guide vane for hydraulic turbine, the pressure fluctuation in volute tongue reduces 30 percent, and under large flow rate condition, the maximum pressure fluctuation amplitude in dynamic and static coupling surface reduces 19%, the dominant frequency is below the blade frequency of impeller, in high frequency region the pressure fluctuation decreases greatly. By adding guide vane, the radial force of turbine also can be greatly reduced.

Copyright

© 2016, 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  - Fengxia Shi
AU  - Ningrui Zhang
PY  - 2016/11
DA  - 2016/11
TI  - Effect of guide vane on pressure fluctuation and radial force in hydraulic turbine
BT  - Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)
PB  - Atlantis Press
SP  - 404
EP  - 410
SN  - 1951-6851
UR  - https://doi.org/10.2991/aest-16.2016.54
DO  - 10.2991/aest-16.2016.54
ID  - Shi2016/11
ER  -