Stéphane Boulal

Experimental analysis of a transcritical LOX/CH4 swirl flame

Maxime Bouton, Aurélie Nicole, Nicolas Fdida, Stéphane Boulal et autres

This study presents an experimental investigation of the flow and combustion dynamics of a single LOX/CH 4 liquid-centered swirl injector under high-pressure transcritical conditions, conducted on the cryogenic MASCOTTE test bench. As a preliminary step, the interaction between hydrodynamic and combustion phenomena …

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Combustion instability of a dual-inlet side-dump ramjet combustor operating near lean blow-off

Stéphane Boulal, Thomas Le Pichon

When operating near lean blow-off, combustors often experience intense combustion instabilities. In a recent work (Boulal et al., 2026), we investigated the combustion dynamics of a ramjet combustor, at operating conditions for which the combustion – although concomitant with a dominant, high-frequency, …

fr (code pays fourni par la source)

Combustion dynamics of a dual-inlet side-dump ramjet combustor

Stéphane Boulal, Aurélien Genot, Thomas Le Pichon

fr (code pays fourni par la source)

One-dimensional flame subject to periodic and sinusoidal motion: frequency domain analysis and flame-motion contribution to combustion instability

Aurélien Genot, Stéphane Boulal, Jean-Michel Klein, Axel Vincent‐Randonnier et autres

fr (code pays fourni par la source)

Design and testing of a hydrogen–oxygen pre-detonator for rotating detonation engines

Wolfgang Armbruster, Ewen Bard, Stéphane Boulal, Michael Börner et autres

Abstract Rotating Detonation Engines (RDEs) have the potential to significantly increase the performance of liquid-propellant rocket engines. Besides, they are also a promising improvement for gas turbine combustors. Therefore, there is a rapidly growing interest world-wide into this technology. One critical aspect …

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Large-scale stochastic dynamics of the afterburning in a supersonic fuel-rich plume: Possible evidence of unconfined deflagration-to-detonation transition

Stéphane Boulal, Adrien Langenais, Laurent François, Pierre Bernigaud et autres

The afterburning of a fuel-rich supersonic hot plume exhausting from a model rocket engine exhibited a complex dynamics, whereby the combustion of an unreacted fuel blend—containing hydrogen and carbon monoxide—with atmospheric air neither stabilized nor blew out. High-speed chemiluminescence of the excited …

fr (code pays fourni par la source)

Experimental Study of Subscale Rotating Detonation Chamber Fed with GH2/GO2

Ewen Bard, Wolfgang Armbruster, Alexander Bee, Michael Börner et autres

International audience

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On the hydro-acoustic coupling responsible for the flashback limit-cycle of a premixed flame at a backward-facing step

Stéphane Boulal, Aurélien Genot, Jean-Michel Klein, Y. Fabignon et autres

fr (code pays fourni par la source)

Analyse fréquentielle des instabilités de combustion induites par une marche descendante

Stéphane Boulal, Jean-Michel Klein, Y. Fabignon, Axel Vincent‐Randonnier et autres

International audience

fr (code pays fourni par la source)

Flame dynamics of a subscale rocket combustor operating with gaseous methane and gaseous, subcritical or transcritical oxygen

Stéphane Boulal, Nicolas Fdida, Lionel Matuszewski, Lucien Vingert et autres

fr (code pays fourni par la source)

Experimental characterization of the combustion dynamics of a subscale rocket combustor operating with gaseous methane and gaseous, subcritical or transcritical oxygen

Stéphane Boulal, Nicolas Fdida, Lucien Vingert, Miguel Martin-Benito

International audience

fr (code pays fourni par la source)

Quantitative experimental characterization of solid-propellant surface temperature before ignition for future model validation

Robin Devillers, Stéphane Boulal, Joël Dupays, Didier Henry

Solid propellants are commonly used for civil and military applications because of their good trade-off between performances and cost. The size of full-scale solid-rocket motors (SRM) and their harsh operating conditions (high temperature, pressure above 5.0 MPa) makes experimental characterizations difficult to …

fr (code pays fourni par la source)