Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session R44: Reacting Flows: Detonations and DDT I
1:50 PM–3:21 PM,
Monday, November 20, 2023
Room: 208AB
Chair: Suo Yang, University of Minnesota
Abstract: R44.00002 : Chemical kinetics effects of lean hydrogen-air mixtures in wedge-induced oblique detonations*
2:03 PM–2:16 PM
Presenter:
Ignacio Sánchez-Ojeda
(Universidad Politécnica de Madrid, ETSIAE)
Authors:
Ignacio Sánchez-Ojeda
(Universidad Politécnica de Madrid, ETSIAE)
Nereida G. de Codina
(Universidad Politécnica de Madrid, ETSIAE)
Pedro J Martínez-Ferrer
(Barcelona Supercomputing Center (BSC))
Daniel Martínez-Ruiz
(Universidad Politécnica de Madrid, ETSIAE)
The impact of the reaction of a lean hydrogen-air mixture in the wedge-induced detonation structure and the stability of the process is analyzed. To achieve this, different parameters are varied (wedge-angle, incident stream Mach number and Zeldovich number) to examine their influence in the transition between oblique shock wave (OSW) and oblique detonation wave (ODW). In particular, the appearance of subsonic regions in the post-shock flow induced by the temperature increase is addressed, which might affect the shock and detonation stability through wave reflection towards the front.
*This work was supported by the project CHAC-CM-UPM, APOYO-JOVENES-21-DUTWBW-98-U5TZN7 funded by the Regional Government of Madrid (Comunidad de Madrid-Spain) under the Multi-annual Agreement with UPM.
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