Impingement cooling is commonly employed in gas turbines to control the turbine tip clearance. During the design phase, computational fluid dynamics (CFD) is an effective way of evaluating such systems but for most turbine case cooling (TCC) systems resolving the small scale and large number of cooling holes is impractical at the preliminary design phase. This paper presents an alternative approach for predicting aerodynamic performance of TCC systems using a “smart” porous media (PM) to replace regions of cooling holes. Numerically CFD defined correlations have been developed, which account for geometry and local flow field, to define the PM loss coefficient. These are coded as a user-defined function allowing the loss to vary, within the calculation, as a function of the predicted flow and hence produce a spatial variation of mass flow matching that of the cooling holes. The methodology has been tested on various geometrical configurations representative of current TCC systems and compared to full cooling hole models. The method was shown to achieve good overall agreement while significantly reducing both the mesh count and the computational time to a practical level.
Skip Nav Destination
Article navigation
Research-Article
Improved Modeling Capabilities of the Airflow Within Turbine Case Cooling Systems Using Smart Porous Media
Yanling Li,
Yanling Li
Department of Aeronautical and
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: y.li3@lboro.ac.uk
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: y.li3@lboro.ac.uk
Search for other works by this author on:
A. Duncan Walker,
A. Duncan Walker
Department of Aeronautical and
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: a.d.walker@lboro.ac.uk
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: a.d.walker@lboro.ac.uk
Search for other works by this author on:
John Irving
John Irving
Search for other works by this author on:
Yanling Li
Department of Aeronautical and
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: y.li3@lboro.ac.uk
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: y.li3@lboro.ac.uk
A. Duncan Walker
Department of Aeronautical and
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: a.d.walker@lboro.ac.uk
Automotive Engineering,
Loughborough University,
Loughborough LE11 3TU, UK
e-mail: a.d.walker@lboro.ac.uk
John Irving
1Corresponding author.
Manuscript received May 15, 2018; final manuscript received October 26, 2018; published online November 22, 2018. Assoc. Editor: Riccardo Da Soghe.
J. Eng. Gas Turbines Power. May 2019, 141(5): 051003 (12 pages)
Published Online: November 22, 2018
Article history
Received:
May 15, 2018
Revised:
October 26, 2018
Citation
Li, Y., Walker, A. D., and Irving, J. (November 22, 2018). "Improved Modeling Capabilities of the Airflow Within Turbine Case Cooling Systems Using Smart Porous Media." ASME. J. Eng. Gas Turbines Power. May 2019; 141(5): 051003. https://doi.org/10.1115/1.4041933
Download citation file:
Get Email Alerts
Cited By
Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced Order Mode
J. Eng. Gas Turbines Power
Design And Testing of a Compact, Reverse Brayton Cycle, Air (R729) Cooling Machine
J. Eng. Gas Turbines Power
Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition
J. Eng. Gas Turbines Power
Related Articles
Time-Accurate Predictions for a Fully Cooled High-Pressure Turbine Stage—Part II: Methodology for Quantifications of Prediction Quality
J. Turbomach (July,2009)
The Relative Performance of External Casing Impingement Cooling Arrangements for Thermal Control of Blade Tip Clearance
J. Turbomach (March,2016)
Numerical Characterization of Aerodynamic Losses of Jet Arrays for Gas Turbine Applications
J. Eng. Gas Turbines Power (May,2012)
Experimental and Numerical Investigation of Impingement Cooling in a Combustor Liner Heat Shield
J. Turbomach (January,2010)
Related Proceedings Papers
Related Chapters
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Thermodynamic Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration