Rotating Detonation: History, Results, Problems
Full article
| Journal |
Transactions on Aerospace Research
|
| Output data |
Year: 2021,
Volume: 2020,
Number: 4,
Pages: 48-60
Pages count
: 13
DOI:
10.2478/tar-2020-0020
|
| Tags |
spinning detonation, rotated detonation wave, self-sustained supersonic regimes and their
nature, low-velocity detonation, “quasi-detonation”, energy-release in reactive mixtures, instability of
reaction zone, connection of DW instabilities with acoustic vibrations of reaction products, looses of
impulse and energy |
| Authors |
Vasil’ev Anatoly A.
1,2
|
| Affiliations |
| 1 |
Lavrentyev Institute of Hydrodynamics SB RAS
|
| 2 |
Novosibirsk State University
|
|
Funding (1)
|
1
|
Министерство науки и высшего образования Российской Федерации
|
FWGG-2021-0003
|
Among of modern papers devoted to numerical modeling of rotated waves the greater part of papers are based on assumption that such wave propagates with velocity equals to the Chapman-Jouguet velocity of ideal detonation model with plane front. But the experimental velocities of rotated detonation waves, as a rule, are less (and even much less) the velocity of ideal Chapman-Jouguet detonation. Such regimes are named as low-velocity detonation or quasi-detonation and its characteristics are practically not investigated carefully. Moreover, similar to the spinning detonation, the strong connection of velocity of rotated transverse waves with the acoustic waves of reaction products was observed. So the new model with an allowance for the losses of impulse and energy must be used at numerical modeling of RDE and new experimental investigations of regimes with understated velocity must be carried out. In given paper some important aspects of rotated detonation waves and new experimental results are analyzed: the multifront system of rotated waves; correlation of rotation velocity of waves with acoustic characteristics of reaction products; streak-records trajectory of rotated waves on moving film; pressure and temperature profiles of rotating waves; velocity deficit and energy-release.