Results 11 to 20 of about 512 (129)

Rotating detonation combustors for propulsion: Some fundamental, numerical and experimental aspects

open access: yesFrontiers in Aerospace Engineering, 2023
Propulsion systems based on the constant-pressure combustion process have reached maturity in terms of performance, which is close to its theoretical limit. Technological breakthroughs are needed to develop more efficient transportation systems that meet
Bruno Le Naour   +3 more
doaj   +1 more source

Numerical and boundary condition effects on the prediction of detonation engine behavior using detailed numerical simulations

open access: yesFrontiers in Aerospace Engineering, 2023
High-fidelity numerical simulations of an experimental rotating detonation engine with discrete fuel/air injection were conducted. A series of configurations with different feed-plenum pressures but with constant equivalence ratio were studied.
Takuma Sato   +2 more
doaj   +1 more source

Numerical simulation of flow field characteristics and the improvement of pressure oscillation of rotating detonation engine

open access: yesDefence Technology, 2023
Due to the inherent working mode of rotating detonation engine (RDE), the detonation flow field has the characteristics of pressure oscillation and axial kinetic energy loss, which makes it difficult to design nozzle and improve propulsion performance ...
Xin-pei Han   +8 more
doaj   +1 more source

Effects of Inlet Condition Variations on the Operating Modes of Rotating Detonation Engines

open access: yes气体物理, 2023
In this study, the operating modes of the rotating detonation engine (RDE) under various inlet conditions were investigated numerically. It was shown that after the sudden reduction of the inlet total pressure, the resulting decrease of the mass flow ...
Song-bai YAO   +2 more
doaj   +1 more source

Numerical Study of the Effects of Injection Conditions on Rotating Detonation Engine Propulsive Performance

open access: yesAerospace, 2023
A three-dimensional upwind conservation element and solution element method (CESE) in cylindrical coordinates is first developed to effectively solve the unsteady reactive Euler equations governing a hydrogen–air rotating detonation engine (RDE) with ...
Lisong Shi   +5 more
doaj   +1 more source

Review on the Rotating Detonation Engine and It’s Typical Problems [PDF]

open access: yes, 2020
Detonation is a promising combustion mode to improve engine performance, increase combustion efficiency, reduce emissions, and enhance thermal cycle efficiency.
Ji, Zifei   +5 more
core   +1 more source

A Short Review on Efficiency of Rotating Detonation Engine [PDF]

open access: yes, 2023
The rotating detonation engine (RDE) is a revolutionary propulsion technology with the potential to significantly enhance the efficiency of propulsion systems.
Veeramanikandan, Lalith
core   +2 more sources

Experimental investigations of mixing characteristics in model rotating detonation engine geometries [PDF]

open access: yes, 2017
This work examines the mechanisms of reactant mixing in a model Rotating Detonation Engine (RDE) geometry. RDEs are emerging as one of the highest potential applications for achieving Pressure Gain Combustion (PGC). Reactant mixing has been identified as
Blümner, Richard   +3 more
core   +1 more source

Effects of Ozone Addition on Multi-Wave Modes of Hydrogen–Air Rotating Detonations

open access: yesAerospace, 2023
Ozone addition presents a promising approach for optimizing and regulating both combustion and ignition mechanisms. In Rotating Detonation Engines (RDEs), investigating the impact of ozone addition is particularly important due to the fact of their ...
Yang Wang, Cheng Tian, Pengfei Yang
doaj   +1 more source

Regulating N Species in N‐Doped Carbon Electro‐Catalysts for High‐Efficiency Synthesis of Hydrogen Peroxide in Simulated Seawater

open access: yesAdvanced Science, Volume 10, Issue 31, November 3, 2023., 2023
The synthesized graphite nitrogen doped carbon material delivers an attracting 2e− ORR catalytic activity in 0.5 m NaCl simulated seawater solution, corresponding to a high H2O2 selectivity (≈95%), preferable stability and H2O2 production amount up to 631.2 mmol g−1 h−1.
Nan Wang   +9 more
wiley   +1 more source

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