Enhanced Mixing in Supersonic Flow Using a Pulse Detonator
| Autor: | Timothy Ombrello, Andrew Naples, Campbell D. Carter, Kuang-Yu Hsu, Jonathan McCall, Frederick Schauer, John Hoke |
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| Rok vydání: | 2015 |
| Předmět: |
Deflagration to detonation transition
Supersonic wind tunnel Materials science business.industry Mechanical Engineering Detonation Aerospace Engineering Mechanics Shadowgraphy humanities Detonator Plume Fuel Technology Optics Space and Planetary Science Planar laser-induced fluorescence business Choked flow |
| Zdroj: | Journal of Propulsion and Power. 31:654-663 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/1.b35316 |
| Popis: | Mixing enhancement in a M=2 crossflow using the transient high-pressure, high-temperature, and high-velocity pulse from a detonation was investigated experimentally. High-frame-rate shadowgraphy and planar laser-induced fluorescence of the nitric oxide molecule showed the structure and time-dependent interaction of the detonation plume with the supersonic flow. The high-momentum flux from the detonation provided significant penetration, with blowdown times of 4–8 ms achieved. Planar laser-induced fluorescence of nitric oxide captured the spanwise structure of the plume and the large counter-rotating vortex structure for enhanced mixing. The upstream jet was shown to be drawn into the pulse detonator’s plume, providing distribution to the core supersonic flow. Significant coupling between a continuous upstream jet and the pulse detonator plume was found and indicated that there was an optimal staging distance for enhanced mixing. |
| Databáze: | OpenAIRE |
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