A tool to evaluate the turbine cooling air schedule during the flight path is presented. The method is suitable for complex gas turbine engine models where accurate calculation of thermodynamic parameters of a cooling flow used for studies such as specific fuel consumption (SFC), lifing, and operating cost analysis. The method is also applicable for land-based gas turbine engines where the flight path is replaced by load pattern. The method can be employed even if only a little information about the engine is known. The calculation method has been investigated on a model of a high bypass ratio turbofan for long haul application. Using it with an aircraft model and after comparing to conventional cooling air simulations, the reduction of SFC during the flight path has been observed. A comparison has been performed on engine manufacturer’s public domain data where the method shows comparable value of total cooling air needed. The tool returns similar results but estimates a higher proportion of cooling air for the high pressure turbine nozzle guide vanes (NGV) compared with Young and Wilcock’s method.
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e-mail: valeriolallini@hotmail.it
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July 2012
Research Papers
A Calculation Tool of a Turbine Cooling Air Schedule for General Gas Turbine Simulation Algorithms
Valerio Lallini,
Valerio Lallini
Department of Power and Propulsion,
e-mail: valeriolallini@hotmail.it
Cranfield University
, SOE Whittle Building, Cranfield, Bedford MK43 0AL, UK
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Jan Janikovic,
Jan Janikovic
Department of Power and Propulsion,
e-mail: janikovic@yahoo.com
Cranfield University
, SOE Whittle Building, Cranfield, Bedford MK43 0AL, UK
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Pericles Pilidis,
Pericles Pilidis
Professor
Cranfield University
, Cranfield, Bedford MK43 0AL, UK
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Riti Singh,
Riti Singh
Professor
Cranfield University
, Cranfield, Bedford MK43 0AL, UK
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Panagiotis Laskaridis
Panagiotis Laskaridis
Cranfield University
, Cranfield, Bedford MK43 0AL, UK
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Valerio Lallini
Department of Power and Propulsion,
Cranfield University
, SOE Whittle Building, Cranfield, Bedford MK43 0AL, UKe-mail: valeriolallini@hotmail.it
Jan Janikovic
Department of Power and Propulsion,
Cranfield University
, SOE Whittle Building, Cranfield, Bedford MK43 0AL, UKe-mail: janikovic@yahoo.com
Pericles Pilidis
Professor
Cranfield University
, Cranfield, Bedford MK43 0AL, UK
Riti Singh
Professor
Cranfield University
, Cranfield, Bedford MK43 0AL, UK
Panagiotis Laskaridis
Cranfield University
, Cranfield, Bedford MK43 0AL, UKJ. Turbomach. Jul 2012, 134(4): 041003 (8 pages)
Published Online: July 19, 2011
Article history
Received:
January 22, 2010
Revised:
November 24, 2010
Online:
July 19, 2011
Published:
July 19, 2011
Citation
Lallini, V., Janikovic, J., Pilidis, P., Singh, R., and Laskaridis, P. (July 19, 2011). "A Calculation Tool of a Turbine Cooling Air Schedule for General Gas Turbine Simulation Algorithms." ASME. J. Turbomach. July 2012; 134(4): 041003. https://doi.org/10.1115/1.4003648
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