A closely-spaced pair of ion gauges was built into a single plug to allow point measurement of a detonation wave. The instrument was tested in a detonation tube to obtain the velocity of an oxyhydrogen detonation wave. It successfully detected the passage of charged particles. A cross-...
initiating the reactants to be burnt into products. The intense heat release permits the high propagating speed of the shock wave to be sustained. It is fundamental research related to
For degrees of overdrive close to one, the detonation wave exhibits a low-frequency mode characterized by large fluctuations in the detonation wave speed. The McVeyToong short-period wave-interaction theory is in qualitative agreement with the numerical simulations; however, the frequencies obtained ...
Here’s a more technical definition: Detonation occurs after an ignition source, either pre-ignition or the spark plug firing, creates a primary flame front who’s acoustic shock wave and thermal gradient kick off auto-ignition in the end-gas (remaining unburnt mixture). This auto-ignition ene...
inflation- (cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang 2.detonation- the act of detonating an explosive burst,explosion- the act of exploding or bursting; "the explosion of the firecrackers awok...
The initiation and propagation of detonation waves in combustible high speed flows were studied experimentally. A planar detonation wave traveling in an initiation tube was transmitted into a test section where a combustible high speed flow was induced by an incident shock wave generated in a shock ...
This leads to the propagation in the gas mixture of a detonation wave of higher velocity. In this wave, unlike the Chapman-Jouget process, the chemical reaction zone moves at subsonic speed relative to the products of the reaction. Therefore, as a shock wave moves away from its place of ...
This transverse wave eventually reflects off the bottom wall (not shown) and in tests with longer delays can re-initiate the detonation wave. Because of the long ignition delay times required for the layer to be established, detonation propagation is influenced by the confinement of the top wall...
The canonical problem of the one-dimensional, pulsating, overdriven detonation wave has been studied for over 30 years, not only for its phenomenological relation to the evolution of multidimensional detonation instabilities, but also to provide a robust, reactive, high-speed flowfield with which to...
Compared to conditions measured with the main fuel injector turned off, peak pressure was 2.7 times higher behind the ramp, and the nozzle exit pressure was 10.5 times higher. The flow velocity was calculated at 99.7 percent of the theoretical detonation wave speed for a freely propagating, norma...