NASA Lewis Stirling engine computer code evaluation
Abstract
In support of the US Department of Energy's Stirling Engine Highway Vehicle Systems program, the NASA Lewis Stirling engine performance code was evaluated by comparing code predictions without engine-specific calibration factors to GPU-3, P-40, and RE-1000 Stirling engine test data. The error in predicting power output was /minus/11 percent for the P-40 and 12 percent for the RE-1000 at design conditions and 16 percent for the GPU-3 at near-design conditions (2000 rpm engine speed versus 3000 rpm at design). The efficiency and heat input predictions showed better agreement with engine test data than did the power predictions. Concerning all data points, the error in predicting the GPU-3 brake power was significantly larger than for the other engines and was mainly a result of inaccuracy in predicting the pressure phase angle. Analysis into this pressure phase angle prediction error suggested that improvement to the cylinder hysteresis loss model could have a significant effect on overall Stirling engine performance predictions. 13 refs., 26 figs., 3 tabs.
- Authors:
- Publication Date:
- Research Org.:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center; Sverdrup Technology, Inc., Cleveland, OH (USA)
- OSTI Identifier:
- 5934657
- Report Number(s):
- DOE/NASA-4105-4; NASA-CR-182248
ON: DE89014584
- DOE Contract Number:
- AI01-85CE50112
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; STIRLING ENGINES; COMPUTER CALCULATIONS; COMPUTER-AIDED DESIGN; COMPUTERIZED SIMULATION; DATA ANALYSIS; EFFICIENCY; EVALUATION; PERFORMANCE; THEORETICAL DATA; DATA; ENGINES; HEAT ENGINES; INFORMATION; NUMERICAL DATA; SIMULATION; 330201* - External Combustion Engines- Stirling Cycle; 990220 - Computers, Computerized Models, & Computer Programs- (1987-1989)
Citation Formats
Sullivan, T J. NASA Lewis Stirling engine computer code evaluation. United States: N. p., 1989.
Web.
Sullivan, T J. NASA Lewis Stirling engine computer code evaluation. United States.
Sullivan, T J. 1989.
"NASA Lewis Stirling engine computer code evaluation". United States.
@article{osti_5934657,
title = {NASA Lewis Stirling engine computer code evaluation},
author = {Sullivan, T J},
abstractNote = {In support of the US Department of Energy's Stirling Engine Highway Vehicle Systems program, the NASA Lewis Stirling engine performance code was evaluated by comparing code predictions without engine-specific calibration factors to GPU-3, P-40, and RE-1000 Stirling engine test data. The error in predicting power output was /minus/11 percent for the P-40 and 12 percent for the RE-1000 at design conditions and 16 percent for the GPU-3 at near-design conditions (2000 rpm engine speed versus 3000 rpm at design). The efficiency and heat input predictions showed better agreement with engine test data than did the power predictions. Concerning all data points, the error in predicting the GPU-3 brake power was significantly larger than for the other engines and was mainly a result of inaccuracy in predicting the pressure phase angle. Analysis into this pressure phase angle prediction error suggested that improvement to the cylinder hysteresis loss model could have a significant effect on overall Stirling engine performance predictions. 13 refs., 26 figs., 3 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/5934657},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}