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ISABE-2017-21302+Aerodynamic+Design+of+a+Cooled+Cooling+Air+System+for+an+Aero+Gas+Turbine_19-06-17.pdf (1.95 MB)

Aerodynamic design of a cooled cooling air system for an aero gas turbine

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conference contribution
posted on 2017-10-06, 15:41 authored by Duncan WalkerDuncan Walker, Bharat R. Koli, Apostolos Spanelis, Peter Beecroft
This paper examines the aerodynamic design requirements of a cooled cooling air system for a large, high by-pass ratio, high overall pressure ratio aero-engine. This can be broken into aerodynamic sub-systems each with their own set of requirements and challenges. A low pressure system is required to deliver air bled from the bypass duct to a heat exchanger for use as a heat sink. Similarly, a high pressure system removes a portion of the hot core engine air from a location downstream of the compressor and ducts this to-and-from the HX for cooling. This cooled air must then be returned, across the main gas path, for use in component cooling. The challenge is to design these sub-systems such that satisfactorily perform their own function whilst integrating into the existing engine architecture. This paper presents an overview of a number of studies which use CFD to explore the design space and develop appropriate designs which were subsequently experimentally validated on several isothermal test facilities. Ultimately the feasibility of designing the aerodynamic sub-systems was demonstrated and a future design strategy established.

Funding

Funded by Rolls-Royce as part of SILOET 2 Project 18.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

The 23rd International Symposium on Air Breathing Engines (ISABE)

Citation

WALKER, A.D. ... et al, 2017. Aerodynamic design of a cooled cooling air system for an aero gas turbine. Presented at the 23rd International Symposium on Air Breathing Engines (ISABE), Manchester, UK, 3rd-8th September 2017, Paper No. 21302.

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2017

Notes

This paper is closed access until 8th March 2018.

Publisher version

Book series

ISABE-2017-21302

Language

  • en

Location

Manchester, UK

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