Wintenberger, E. and Shepherd, J. E. (2006) Thermodynamic Cycle Analysis for Propagating Detonations. Journal of Propulsion and Power, 22 (3). pp. 694-697. ISSN 0748-4658 http://resolver.caltech.edu/CaltechAUTHORS:WINjpp06b
- Published Version
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:WINjpp06b
Propagating detonations have recently been the focus of extensive work based on their use in pulse detonation engines . The entropy minimum associated with Chapman–Jouguet (CJ) detonations  and its potential implications on the thermal efficiency of these systems  has been one of the main motivations for these efforts. The notion of applying thermodynamic cycles to detonation was considered first by Zel’dovich , who concluded that the efficiency of the detonation cycle is slightly larger than that of a cycle using constant-volume combustion. More recently, Heiser and Pratt  conducted a thermodynamic analysis of the detonation cycle for a perfect gas using a one-γ model of detonations. Other studies have used constant-volume combustion as a surrogate for the detonation process . This work presents two main contributions. First, we present an alternative physical model for the detonation cycle handling propagating detonations in a purely thermodynamic fashion. The Fickett–Jacobs (FJ) cycle is a conceptual thermodynamic cycle that can be used to compute an upper bound to the amount of mechanical work that can be obtained from detonating a given mass of explosive. Second, we present computations of the cycle thermal efficiency for a number of fuel-oxygen and fuel-air mixtures using equilibrium chemistry, and we discuss the strong influence of dissociation reactions on the results.
|Additional Information:||Copyright © 2006 by the California Institute of Technology. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Presented as Paper 2004-1033 at the AIAA 42nd Aerospace Sciences Meeting and Exhibit, Reno,NV, 5–8 January 2004; received 10 August 2004; revision received 15 August 2005; accepted for publication 23 September 2005. This work was supported by Stanford University Contract PY-1905 under Department of Navy Grant N00014-02-1-0589 “Pulse Detonation Engines: Initiation, Propagation, and Performance.”|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||07 Aug 2008 02:46|
|Last Modified:||26 Dec 2012 10:12|
Repository Staff Only: item control page