scholarly journals Data-driven surrogates of rotating detonation engine physics with neural ordinary differential equations and high-speed camera footage

2021 ◽  
Vol 33 (9) ◽  
pp. 091703
Author(s):  
J. Koch
Keyword(s):  
Differential Equations ◽  
Ordinary Differential Equations ◽  
High Speed ◽  
Data Driven ◽  
High Speed Camera ◽  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation

scholarly journals High-Speed Diagnostics in a Natural Gas–Air Rotating Detonation Engine

2020 ◽  
Vol 36 (4) ◽  
pp. 498-507 ◽  
Author(s):  
Christopher L. Journell ◽  
Rohan M. Gejji ◽  
Ian V. Walters ◽  
Aaron I. Lemcherfi ◽  
Carson D. Slabaugh ◽  
...  
Keyword(s):  
Natural Gas ◽  
High Speed ◽  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation

Multiphase Rotating Detonation Engine

2020 ◽  
Author(s):  
Ian Dunn ◽  
Kareem Ahmed
Keyword(s):  
Detonation Wave ◽  
High Speed ◽  
Fourier Transforms ◽  
Operational Parameters ◽  
Discrete Fourier Transforms ◽  
Rotating Detonation Engine ◽  
Coal Particles ◽  
Detonation Engine ◽  
Rotating Detonation ◽  
Carbon Concentrations

Abstract The first experimental evidence of a solid-gas multiphase rotating detonation engine. Coal particles, carbon black with a volatility of 1% and a carbon concentration of 99%, were detonated successfully over many operational parameters. These operational parameters surrounding the various points of investigation are shown in multiple 2-D slices as well as plotted in one 3-D graph to show the effects of varying carbon concentrations. These parameters include: variation in total mass flux injected into the annulus ranging from (≅120–270 kg/(s*m2), variation in hydrogen-air equivalence ratio (0.65–1.0), and finally variation in total concentrations of carbon (0–42.5%). High-speed backend imaging allowed for the analysis of the detonation wave dynamics, where detonation velocities were deduced using Discrete Fourier Transforms. By varying the parameters mentioned above, detonation velocities experienced in the detonation channel allowed for an introduction of an optimal operational point. When carbon was injected into very lean hydrogen-air conditions, the detonation was over-driven, causing fluctuations in the detonation velocities upwards of ∼100 m/s. As carbon concentrations increased further, detonation wave velocities relative to Chapman-Jouguet detonation velocities decreased.

Numerical Modeling of the RDE

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Michal Folusiak ◽  
Karol Swiderski ◽  
Piotr Wolański
Keyword(s):  
Combustion Chamber ◽  
Turbine Engine ◽  
Rotating Detonation Engine ◽  
University Of Technology ◽  
Detonation Combustion ◽  
Detonation Engine ◽  
Innovative Economy ◽  
Turboshaft Engine ◽  
The University ◽  
Rotating Detonation

AbstractThe idea of using the phenomenon of rotating detonation to propulsion has its roots in fifties of the last century in works of Adamson et al. and Nicholls et al. at the University of Michigan. The idea was recently reinvented and experimental research and numerical simulations on the Rotating Detonation Engine (RDE) are carried in numerous institutions worldwide, in Poland at Warsaw University of Technology (WUT) since 2004. Over the period 2010-2014 WUT and Institute of Aviation (IOA) jointly implemented the project under the Innovative Economy Operational Programme entitled ‘Turbine engine with detonation combustion chamber’. The goal of the project was to replace the combustion chamber of turboshaft engine GTD-350 with the annular detonation chamber.This paper is focused on investigation of the influence of a geometry and flow conditions on the structure and propagation stability of the rotating detonation wave. Presented results are in majority an outcome of the aforementioned programme, in particular authors’ works on the development of the in-house code REFLOPS USG and its application to simulation of the rotating detonation propagation in the RDE.

Propulsive Performane of Cylindrical Rotating Detonation Engine with Propellant Injection Cooing

2021 ◽  
Author(s):  
Keisuke Goto ◽  
Kosei Ota ◽  
Akira Kawasaki ◽  
Hiroaki Watanabe ◽  
Nobotu Itouyama ◽  
...  
Keyword(s):  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation

Flow Visualization inside a Rotating Detonation Engine near Injection Nozzles Using Point-Diffraction Interferometry

2021 ◽  
Author(s):  
Toshiharu Mizukaki ◽  
Fumihiko Iwasaki ◽  
Makoto Kojima ◽  
Hideto Kawashima ◽  
Shingo Matsuyama ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation

RECENT STUDIES ON LIQUID-FUELED ROTATING DETONATION ENGINE

2019 ◽  
Author(s):  
A.K. HAYASHI ◽  
◽  
W. YOSHIDA ◽  
M. ASAHARAI ◽  
N. TSUBOI ◽  
...  
Keyword(s):  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation
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