Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5145373 | International Journal of Hydrogen Energy | 2017 | 11 Pages |
Abstract
This paper presents results of an experimental investigation on detonation wave propagation in semi-confined geometries. Large scale experiments were performed in layers up to 0.6Â m filled with uniform and non-uniform hydrogen-air mixtures in a rectangular channel (width 3Â m; length 9Â m) which is open from below. A semi confined driver section is used to accelerate hydrogen flames from weak ignition to detonation. The detonation propagation was observed in a 7Â m long unobstructed part of the channel. Pressure measurements, ionization probes, soot-records and high speed imaging were used to observe the detonation propagation. Critical conditions for detonation propagation in different layer thicknesses are presented for uniform H2/air-mixtures, as well as experiments with uniform H2/O2 mixtures in a down scaled transparent channel. Finally detail investigations on the detonation wave propagation in H2/air-mixtures with concentration gradients are shown.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
J. Grune, K. Sempert, A. Friedrich, M. Kuznetsov, T. Jordan,