| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Inst Adv Studies, Dept Aerosp Sci & Technol, Aerothermodynam & Hyperson Div, Trevo Cel Av Jose AA do Amarante 1, BR-12228001 Sao Jose Dos Campos, SP - Brazil
[2] Technol Inst Aeronaut, Dept Aerosp Sci & Technol, Praca Mal Eduardo Gomes 50, BR-12228900 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | EXPERIMENTAL THERMAL AND FLUID SCIENCE; v. 102, p. 261-270, APR 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
A study on a hydrogen-fuelled single-cycle pulse detonation device, through pressure and spontaneous emission measurements, was carried out. Detonation initiation was effectively achieved by applying a 65 J microsecond discharge associated with the Shchelkin spiral with very small errors in the diagnostic method. OH{*} and H2O{*} temporal emission measurements were applied at the nozzle exit to establish correlations to specific impulses, determined from pressure curves. OH{*} emission images were also captured to verify detonation propagation at the exhaust. Both the OH{*} and H2O{*} emitters correlated well with the specific impulses, and the integrated areas under emission peak maxima resulted in improved correlations. It was found that the OH{*} amount per kilogram of fuel grows exponentially with the specific impulse based on fuel, while the H2O{*} emission area per kilogram of mixture decays exponentially with the specific impulse, based on the mixture. The OH{*} images demonstrate stable detonation propagations and validate the established correlations. Furthermore, a new optical method was developed for detonation cycle diagnostics. (AU) | |
| FAPESP's process: | 08/10548-5 - Pulse-detonation study by diagnostic optical techniques |
| Grantee: | Carla Simone Tafuri Marques |
| Support Opportunities: | Regular Research Grants |