Experimental study of gas detonation in conical tubes
The detonation of gaseous fuels is finding ever wider use in various technological processes. There are cases in which it is necessary to transmit the detonation wave from a small diameter tube to one of large diameter. Usually such transmission is accomplished by conical tubes. The present study considers the following topics: change in structure of multifront gas detonation upon transition from a constant section tube to a conical one; regimes in which detonation transmission through a conical tube may occur; and the effect of fuel mixture composition on the structure of the multifront detonation wave and conditions for detonation propagation in conical tubes. The experiments showed that detonation can be accomplished in two ways. Continuous transmission of the detonation wave is possible, accompanied by decrease in wave velocity and deformation of the internal front structure. The other method involves quenching and subsequent reestablishment of the detonation wave, in which case the wave velocity falls more and detonation front structure is destroyed. The distance at which secondary initiation of the detonation wave occurs depends on the initial pressure and composition of the fuel mixture, and the amount of attenuation in the conical tube.
- Research Organization:
- Moscow, USSR
- OSTI ID:
- 6460990
- Journal Information:
- Combust., Explos. Shock Waves (Engl. Transl.); (United States), Vol. 18:5; Other Information: Translated from Fizika Goreniya i Vzryva, Vol. 18, No. 5, pp. 111-117, September-October, 1982
- Country of Publication:
- United States
- Language:
- English
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