Recent Progress, Development Trends, and Consideration of Continuous Detonation Engines

John, Z. G.; Luan, Ming-Yi; Xia, Zhi-Jie; Wang, Jianping; Zhang, Shujie; Yao, Songbai; Wang, Bing

doi:10.2514/1.j058157

Cited by 114 publications

(20 citation statements)

References 124 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Away from the detonation front, a Prandtl-Meyer expansion accelerates the flow. This involves a pressure reduction to the injection conditions (for details, refer to figures in [57,58]). In this zone, the fresh mixture of reactants can refill the chamber and the cycle starts again [57].…”

Section: Rotating Detonation Engine (Rde)mentioning

confidence: 99%

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

et al. 2021

View full text Add to dashboard Cite

The effects of climate change and global warming are arising a new awareness on the impact of our daily life. Power generation for transportation and mobility as well as in industry is the main responsible for the greenhouse gas emissions. Indeed, currently, 80% of the energy is still produced by combustion of fossil fuels; thus, great efforts need to be spent to make combustion greener and safer than in the past. For this reason, a review of the most recent gas turbines combustion strategy with a focus on fuels, combustion techniques, and burners is presented here. A new generation of fuels for gas turbines are currently under investigation by the academic community, with a specific concern about production and storage. Among them, biofuels represent a trustworthy and valuable solution in the next decades during the transition to zero carbon fuels (e.g., hydrogen and ammonia). Promising combustion techniques explored in the past, and then abandoned due to their technological complexity, are now receiving renewed attention (e.g., MILD, PVC), thanks to their effectiveness in improving the efficiency and reducing emissions of standard gas turbine cycles. Finally, many advances are illustrated in terms of new burners, developed for both aviation and power generation. This overview points out promising solutions for the next generation combustion and opens the way to a fast transition toward zero emissions power generation.

show abstract

Section: Rotating Detonation Engine (Rde)mentioning

confidence: 99%

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Due to their self-ignition, fast energy release and high thermal cycle efficiency, detonation phenomena as a combustion mode have attracted increasing attention in the development of hypersonic propulsion systems (Kailasanath 2000;Wolański 2013;Lu & Braun 2014). Among the different kinds of detonation-based engines (Roy et al 2004;Higgins 2006;Ma et al 2020), the oblique detonation engine (ODE) is expected to have more applications in hypersonic air-breathing propulsion at high flight Mach numbers because of the additional stabilization and reduced compression losses of oblique detonation waves (ODWs) (Qin & Zhang 2018;Ren et al 2019;Jiang et al 2021). Hence, a comprehensive understanding of ODWs is fundamental for their successful utility in ODEs, and substantial progress in understanding ODWs has been achieved in recent decades.…”

Section: Introductionmentioning

confidence: 99%

“…2004; Higgins 2006; Ma et al. 2020), the oblique detonation engine (ODE) is expected to have more applications in hypersonic air-breathing propulsion at high flight Mach numbers because of the additional stabilization and reduced compression losses of oblique detonation waves (ODWs) (Qin & Zhang 2018; Ren et al. 2019; Jiang et al.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of the destabilized Mach reflection of inviscid oblique detonation waves before an expansion corner

2022

View full text Add to dashboard Cite

The stabilization of oblique detonation waves (ODWs) in an engine combustor is important for the successful applications of oblique detonation engines, and comprehensively understanding the effects of the inviscid reflection of ODWs on their stabilization and the relevant mechanisms is imperative to overall combustor design. In this study, the flow fields of ODW reflections in a space-confined combustor are numerically studied by solving the two-dimensional time-dependent multispecies Euler equations in combination with a detailed hydrogen combustion mechanism. The inviscid Mach reflections of ODWs before an expansion corner are emphasized with different flight Mach numbers, Ma, and different dimensionless reflection locations, ζ ≥ 0 (ζ = 0: the ODW reflects precisely at the expansion corner; ζ > 0: the ODW reflects off the wall before the expansion corner). Two kinds of destabilization phenomena of the inviscid Mach reflection of an ODW induced by different mechanisms are found, namely wave-induced destabilization at large ζ > 0 for moderate (not very low) Ma and inherent destabilization at any ζ > 0 for low Ma. Wave-induced destabilization is attributed to the incompatibility between the pressure ratio across the Mach stem and its relative propagation speed, which is triggered by the action of the secondary reflected shock wave or the transmitted Mach stem on the subsonic zone behind the Mach stem. Inherent destabilization is demonstrated through an in-depth theoretical analysis and is attributed to geometric choking of the flow behind the Mach stem.

show abstract

“…A strong coupling between the leading shock and the reaction zone is a key feature of self-sustained detonation waves 1 . Fundamental understanding of the latter regime of combustion is necessary to propulsion [2][3][4][5][6] and industrial/nuclear safety 7 . Detonation quenching limits and re-initiation mechanisms for different fuel mixtures are experimentally characterized using their cellular structure; engineering correlations are oftentimes based on this metric.…”

Section: Introductionmentioning

confidence: 99%

The influence of the equation of state on the cellular structure of gaseous detonations

2021

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Recent Progress, Development Trends, and Consideration of Continuous Detonation Engines

Cited by 114 publications

References 124 publications

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

Mechanisms of the destabilized Mach reflection of inviscid oblique detonation waves before an expansion corner

The influence of the equation of state on the cellular structure of gaseous detonations

Contact Info

Product

Resources

About