Evaluation of Performance Loss Methods for High-Speed Engines and Engine Components

Author

David W. Riggins, Missouri University of Science and TechnologyFollow

Abstract

A comparative study of high-speed engine performance assessment techniques based on exergy (available work) and thrust potential (thrust availability) is summarized. Simple one-dimensional flowfields utilizing Rayleigh heat addition and friction are used to demonstrate the inability of conventional exergy techniques to predict engine component performance, aid in component design, or accurately assess flow losses. The thrust-based method yields useful information in all of these categories for these flows. The conventional definition of exergy includes work that is inherently unavailable to an aerospace Brayton engine. An engine-based exergy is developed that accurately accounts for this inherently unavailable work; performance parameters based on this quantity yield design and loss information identical to the thrust-based method.

Recommended Citation

D. W. Riggins, "Evaluation of Performance Loss Methods for High-Speed Engines and Engine Components," Journal of Propulsion and Power, American Institute of Aeronautics and Astronautics (AIAA), Jan 1997.

The definitive version is available at https://doi.org/10.2514/2.5162

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0748-4658

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.

Publication Date

01 Jan 1997