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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Penkner, Andreas Jeschke, Peter |
Copyright Year | 2015 |
Abstract | This paper considers the effect of excessive total pressure losses for heat transfer problems in fluid flows with a high circumferential swirl component. At RWTH Aachen University, a novel gas generator concept is under research. This design avoids some disadvantages of small gas turbines and uses a rotating combustion chamber. During the pre-design of the rotating combustion chamber using CFD tools, unexpected high total pressure losses were detected. To analyze this unknown phenomenon, a gas-dynamic model of the rotating combustion chamber has been developed to explain the unexpected high Rayleigh pressure losses. The derivation of the gas-dynamic model, the physical phenomenon related to the high total pressure losses in high-swirl combustion, the influencing factors, as well as thermodynamic interpretation of the Rayleigh pressure losses, are presented in this paper. In addition, the CFD results are validated by the gas-dynamic model derived. The results presented here are of possible interest for a wide range of applications, since these fundamental findings can be transferred to all heat transfer problems in fluid flows with a high circumferential swirl component. |
Sponsorship | International Gas Turbine Institute |
File Format | |
ISBN | 9780791856628 |
DOI | 10.1115/GT2015-42277 |
Volume Number | Volume 1: Aircraft Engine; Fans and Blowers; Marine |
Conference Proceedings | ASME Turbo Expo 2015: Turbine Technical Conference and Exposition |
Language | English |
Publisher Date | 2015-06-15 |
Publisher Place | Montreal, Quebec, Canada |
Access Restriction | Subscribed |
Subject Keyword | Design Gas turbines Computational fluid dynamics Fluid dynamics Combustion Generators Combustion chambers Pressure Heat transfer |
Content Type | Text |
Resource Type | Article |
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