Results 21 to 30 of about 231,983 (247)

Performance analysis of a rotating detonation model for future thermal power system using hydrogen as fuel

open access: yesEnergy Reports, 2022
The thermodynamic cycles of the detonation combustion could potentially deliver a performance increase of 20% beyond the conventional deflagration combustor such as gas turbines and ramjets, thus the detonative combustor is a prospective technology for ...
Mengmeng Zhao   +4 more
doaj   +1 more source

Application of Steady and Unsteady Detonation Waves to Propulsion [PDF]

open access: yes, 2004
The present work investigates the applications of steady and unsteady detonation waves to air-breathing propulsion systems. The efficiency of ideal detonation-based propulsion systems is first investigated based on thermodynamics.
Wintenberger, Eric
core   +1 more source

A Numerical and Analytical Study of Detonation Diffraction [PDF]

open access: yes, 2003
An investigation of detonation diffraction through an abrupt area change has been carried out via two-dimensional, parallel simulations. The existence of critical conditions for successful diffraction is closely related to the occurrence of localized re ...
Arienti, Marco
core   +1 more source

Numerical Investigation of Contact Burning in an Air-Breathing Continuous Rotating Detonation Engine

open access: yesInternational Journal of Aerospace Engineering, 2022
Three-dimensional (3D) numerical simulations of a continuous rotating detonation engine are carried out with an unsteady Reynolds-averaged Navier-Stokes solver.
Dapeng Xiong   +7 more
doaj   +1 more source

Numerical modelling of pressure rise combustion for reducing emissions of future civil aircraft [PDF]

open access: yes, 2014
This work assesses the feasibility of designing and implementing the wave rotor (WR), the pulse detonation engine (PDE) and the internal combustion wave rotor (ICWR) as part of novel Brayton cycles able to reduce emissions of future aircraft.
Materano Blanco, Gilberto Ignacio
core   +6 more sources

Detonation Induced Strain in Tubes [PDF]

open access: yes, 2010
When a detonation wave propagates through a piping system, it acts as a traveling pressure load to the pipe wall. The detonation wave must be followed by an expansion wave in order to bring the combustion products to zero velocity at the ignition end ...
Karnesky, James Alan
core   +1 more source

Effects of Reversed Shock Waves on Operation Mode in H2/O2 Rotating Detonation Chambers

open access: yesEnergies, 2021
Operation modes are an important topic in the research of Rotating Detonation Chamber (RDC) as it can affect the stability of RDC. However, they have not been discussed in detail due to the limitation of measurement means in experiments.
Yanliang Chen   +2 more
doaj   +1 more source

Effects of Diverging Nozzle Downstream on Flow Field Parameters of Rotating Detonation Combustor

open access: yesApplied Sciences, 2019
In this study, three-dimensional numerical studies have been performed to investigate the performance of a rotating detonation combustor with a diverging nozzle downstream.
Chengwen Sun   +5 more
doaj   +1 more source

Detonation Diffraction in Mixtures with Various Degrees of Instability [PDF]

open access: yes, 2005
Planar laser induced fluorescence (PLIF) is widely used in combustion diagnostics but has only recently been successfully applied to detonation. The strong spatial variations in temperature, pressure, and background composition under these conditions ...
Pintgen, Florian Peter
core   +1 more source

Influence of Oxygen Content on the Operating Characteristics of a Disk-shaped Rotating Detonation Engine [PDF]

open access: yesJournal of Applied Fluid Mechanics
Rotating detonation engines (RDEs) are an advanced propulsion technology utilizing detonation combustion. RDEs have shown significant potential for substantially enhancing the performance of conventional propulsion systems due to their inherent ...
Z. Xia, H. Ma, B. Sun
doaj   +1 more source

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