Analysis and optimization of guide vane jets to decrease the unsteady load on mixed flow hydroturbine runner blades

B. J. Lewis; J. M. Cimbala; A. M. Wouden

Analysis and optimization of guide vane jets to decrease the unsteady load on mixed flow hydroturbine runner blades

B. J. Lewis
, J. M. Cimbala
, A. M. Wouden

Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

8 Scopus citations

Abstract

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.

Original language	English (US)
State	Published - 2012
Event	7th International Conference on Computational Fluid Dynamics, ICCFD 2012 - Big Island, United States Duration: Jul 9 2012 → Jul 13 2012

Conference

Conference	7th International Conference on Computational Fluid Dynamics, ICCFD 2012
Country/Territory	United States
City	Big Island
Period	7/9/12 → 7/13/12

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Aerospace Engineering
Computational Mechanics
Mechanical Engineering
Mechanics of Materials
Condensed Matter Physics

Cite this

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title = "Analysis and optimization of guide vane jets to decrease the unsteady load on mixed flow hydroturbine runner blades",

abstract = "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.",

author = "Lewis, \{B. J.\} and Cimbala, \{J. M.\} and Wouden, \{A. M.\}",

note = "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: {\textcopyright} 2012 7th International Conference on Computational Fluid Dynamics, ICCFD 2012. All rights reserved.; 7th International Conference on Computational Fluid Dynamics, ICCFD 2012 ; Conference date: 09-07-2012 Through 13-07-2012",

year = "2012",

language = "English (US)",

}

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.

UR - https://www.scopus.com/pages/publications/85085669816

UR - https://www.scopus.com/pages/publications/85085669816#tab=citedBy

M3 - Paper

AN - SCOPUS:85085669816

T2 - 7th International Conference on Computational Fluid Dynamics, ICCFD 2012

Y2 - 9 July 2012 through 13 July 2012

ER -

Analysis and optimization of guide vane jets to decrease the unsteady load on mixed flow hydroturbine runner blades

Abstract

Conference

All Science Journal Classification (ASJC) codes

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