Electrical enhancement of detonation
| Autor: | D H Edwards, G.O. Thomas, A. Milne, M. J. Edwards |
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| Rok vydání: | 1993 |
| Předmět: | |
| Zdroj: | Journal of Physics D: Applied Physics. 26:20-30 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/26/1/005 |
| Popis: | Simple one-dimensional theory of detonation indicates that the propagation characteristics of a detonation wave may be modified in a controlled manner by the addition of an energy source to supplement the chemical energy release within the wavefront. Provided that a sufficient level of electrical conductivity is obtained in the front then one possible means of providing such an additional energy source is that of ohmic heating. Results are first presented on the conductivity levels found in gaseous detonation, and the means by which they may be increased are discussed. These are followed by experimental studies that attempt electrical enhancement of gaseous detonation. Experimental studies are then described in which transient electric fields are applied transversely to the propagating wave. Under these experimental conditions theoretical estimates show that only 4% of the stored energy was deposited in the reaction zone. Not surprisingly, therefore, no observable enhancement of the wave occurs. The bulk of the energy is deposited further downstream, where it cannot influence the detonation characteristics. Attempts at increasing the field strength (and thus current) merely resulted in arcing in the reaction products. |
| Databáze: | OpenAIRE |
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