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A Generalized Model for Vehicle Thermodynamic Loss Management and Technology Concept Evaluation
Technical Paper
2000-01-5562
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The objective of this paper is to develop a generalized loss management model to account for the usage of thermodynamic work potential in vehicles of any type. The key to accomplishing this is creation of a differential representation for vehicle loss as a function of operating condition. This differential model is then integrated through time to obtain an analytical estimate for total usage (and loss) of work potential consumed by each loss mechanism present during vehicle operation. The end result of this analysis is a better understanding of how the work potential initially present in the fuel, batteries, etc. is partitioned amongst all losses relevant to the vehicle's operation. The loss partitioning estimated from this loss management model can be used in conjunction with cost accounting systems to gain a better understanding of underlying drivers on vehicle manufacturing and operating costs. In addition, loss management models are useful for evaluation of technology models during the preliminary phases of design because they provide a common basis to measure the impact of disparate technologies.
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Citation
Roth, B. and Mavris, D., "A Generalized Model for Vehicle Thermodynamic Loss Management and Technology Concept Evaluation," SAE Technical Paper 2000-01-5562, 2000, https://doi.org/10.4271/2000-01-5562.Also In
References
- Bejan, A. Advanced Engineering Thermodynamics 2nd Edition Wiley New York 1997
- Nichols, J.B. “An Energy Basis for Comparison of Performance of Combustion Chambers,” Trans. of the ASME Jan 1953 29 33
- Curran, E.T., et al “The Use of Stream Thrust Concepts for the Approximate Evaluation of Hypersonic Ramjet Engine Performance,” Air Force Aero-propulsion Laboratory Report AD-769 481 July 1973
- Riggins, D.W. “Evaluation of Performance Loss Methods for High-Speed Engines and Engine Components,” Journal of Propulsion and Power 13 2 Mar-Apr 1997
- Roth, B.A. Mavris, D.N. “Work Availability Models for Jet Propulsion, Part I: Theory and Taxonomy,” Submitted to the Journal of Propulsion and Power Sept. 1999
- Roth, B.A. Mavris, D.N. “Work Availability Models for Jet Propulsion, Part II: Application to the Turbojet Engine,” Submitted to the Journal of Propulsion and Power Sept. 1999
- Bejan, A. “A Role for Exergy Analysis and Optimization in Aircraft Energy-System Design,” ASME International Mechanical Engineering Congress Nashville, TN Nov. 14-19 1999
- Roth, B.A. A Theoretical Treatment of Technology Risk in Modern Propulsion System Design , Ph.D. Thesis Georgia Institute of Technology May 2000
- Bejan, A. Tsatsoronis, G. Moran, M. Thermal Design and Optimization Wiley New York 1996 405
- Claeys, H.S., et al. “Integrated Aircraft Thermal Management and Power Generation,” SAE 932055 1993
- Moran, M.J. Availability Analysis: A Guide to Efficient Energy Use Prentice-Hall Englewood Cliffs, NJ 1982 146
- Li, K.W. Applied Thermodynamics: Availability Method and Energy Conversion Taylor & Francis New York 1996 133
- Roth, B. Mavris, D. “Analysis of Advanced Technology Impact on HSCT Engine Cycle Performance,” AIAA99-2379 June 1999
- Bejan, A. Entropy Generation through Heat and Fluid Flow Wiley New York 1982
- Vance, C.H. “Standard Aircraft Characteristics Performance of the Northrop F-5E Air Superiority Fighter with Two J85-GE-21 Engines,” Northrop Report NOR 76-158 Dec. 1976
- “Model Specification: E1164-A Engine, Aircraft, Turbojet, J85-GE-21,” General Electric Company Feb. 1971
- Klann, J.L. Snyder, C.A. “NEPP User's Manual,” NASA Lewis Research Center Cleveland, OH 1997
- Kowalski, E.J. Atkins, R.A. “Computer Code for Estimating Installed Performance of Aircraft Gas Turbine Engines, Vol. II: User's Manual,” NASA CR159692 1979
- McCullers, L.A. “FLOPS Release 5.94 User's Guide,” NASA Langley Research Center Hampton, VA 1998