TY - CONF
T1 - Analysis and optimization of guide vane jets to decrease the unsteady load on mixed flow hydroturbine runner blades
AU - Lewis, B. J.
AU - Cimbala, J. M.
AU - Wouden, A. M.
N1 - Funding Information:
The authors would like to give special thanks to the Department of Defense High Performance Computing and Modernization Program for their generous donation of computational time and resources at their supercomputing centers. This research was made with government support under and awarded by DoD, Air Force Office of Scientific Research, and National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a. Partial support was also received from a DoE grant, Graduate Student Fellowship Program for Hydropower Research.
Publisher Copyright:
© 2012 7th International Conference on Computational Fluid Dynamics, ICCFD 2012. All rights reserved.
PY - 2012
Y1 - 2012
N2 - As the runner blades of a mixed-flow hydroturbine pass through the wakes created from the guide vanes, they experience a significant change in absolute velocity, flow angle, and pressure. The concept of adding water jets to the trailing-edge of the guide vanes is proposed as a method for reducing the dynamic load on the hydroturbine runner blades. Computational experiments show a decrease in velocity variation experienced at the location of the runner blades with the addition of the jets. The decrease in velocity variation should result in a reduction in dynamic load on the runner blades. A simple optimization procedure was performed to determine the optimal jet flow rate to negate the effect of the wake deficit.
AB - As the runner blades of a mixed-flow hydroturbine pass through the wakes created from the guide vanes, they experience a significant change in absolute velocity, flow angle, and pressure. The concept of adding water jets to the trailing-edge of the guide vanes is proposed as a method for reducing the dynamic load on the hydroturbine runner blades. Computational experiments show a decrease in velocity variation experienced at the location of the runner blades with the addition of the jets. The decrease in velocity variation should result in a reduction in dynamic load on the runner blades. A simple optimization procedure was performed to determine the optimal jet flow rate to negate the effect of the wake deficit.
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M3 - Paper
AN - SCOPUS:85085669816
T2 - 7th International Conference on Computational Fluid Dynamics, ICCFD 2012
Y2 - 9 July 2012 through 13 July 2012
ER -