Abstract
A crypto-steady pressure-exchanger (rotating center body ejecting fluid in a supersonic flow field) is investigated based on fundamental fluid dynamic principles. The results are then compared to computational fluid dynamic (CFD) simulations of a simplified device. On the basis of this comparison the device studied is correctly classified as an unsteady ejector instead of a type of turbomachinery. Entropy gains (total pressure losses) associated with the complex fluid-fluid and fluid-center body interactions are shown to be greater than total pressure gains due to work addition. Compared to a steady ejector, the virtual turbomachine shows increased entrainment (mixing) of the main and injectant flows (89 %). However, the total pressure losses associated with the crypto-steady pressure exchanger are twice as large as those of a steady ejector. © 2001 by the American Institute of Aeronautics and Astronautics, Inc.
Recommended Citation
T. Scott and D. W. Riggins, "Re-examination of the Crypto-steady Pressure-exchanger (virtual Turbomachine)," 15th AIAA Computational Fluid Dynamics Conference, American Institute of Aeronautics and Astronautics, Jan 2001.
The definitive version is available at https://doi.org/10.2514/6.2001-2927
Department(s)
Mechanical and Aerospace Engineering
Publication Status
Full Access
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Aeronautics and Astronautics, All rights reserved.
Publication Date
01 Jan 2001
