Quantitative Ion Probe Measurements for Application in a Rotating Detonation Engine

AIAA Journal ◽  
2020 ◽  
Vol 58 (9) ◽  
pp. 4003-4016
Author(s):  
Clinton Bedick ◽  
Don Ferguson
Keyword(s):  
Rotating Detonation Engine ◽  
Ion Probe ◽  
Detonation Engine ◽  
Rotating Detonation ◽  
Probe Measurements

OH* Chemiluminescence Imaging of the Combustion Products From a Methane-Fueled Rotating Detonation Engine

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
Jonathan Tobias ◽  
Daniel Depperschmidt ◽  
Cooper Welch ◽  
Robert Miller ◽  
Mruthunjaya Uddi ◽  
...  
Keyword(s):  
Power Generation ◽  
Gas Turbines ◽  
Combustion Products ◽  
Combined Cycle ◽  
Oblique Shock Wave ◽  
Rotating Detonation Engine ◽  
Continuous Detonation ◽  
Detonation Engine ◽  
Rotating Detonation ◽  
Probe Measurements

Pressure gain combustion (PGC) has been conceived to convert fuel's chemical energy into thermal energy and mechanical energy, thereby reducing the entropy production in the process. Recent research has shown that the rotating detonation combustor (RDC) can provide excellent specific thrust, specific impulse, and pressure gain within a small volume through rapid energy release by continuous detonation in the circumferential direction. The RDC as a PGC system for power generating gas turbines in combined cycle power plants could provide significant efficiency gains. However, few past studies have employed fuels that are relevant to power generation turbines, since RDC research has focused mainly on propulsion applications. In this study, we present experimental results from RDC operated on methane and oxygen-enriched air to represent reactants used in land-based power generation. The RDC is operated at a high pressure by placing a back-pressure plate downstream of the annular combustor. Past studies have focused mainly on probe measurements inside the combustor, and thus, little information is known about the nature of the products exiting the RDC. In particular, it is unknown if chemical reactions persist outside the RDC annulus, especially if methane is used as the fuel. In this study, we apply two time-resolved optical techniques to simultaneously image the RDC products at framing rate of 30 kHz: (1) direct visual-imaging to identify the overall size and extent of the plume, and (2) OH* chemiluminescence imaging to detect the reaction zones if any. Results show dynamic features of the combustion products that are consistent with the probe measurements inside the rotating detonation engine (RDE). Moreover, presence of OH* in the products suggests that the oblique shock wave and reactions persist downstream of the detonation zone in the RDC.

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

Investigation into the effective injector area of a rotating detonation engine with impact of backflow

Shock Waves ◽  
2021 ◽  
Author(s):  
K. Goto ◽  
R. Yokoo ◽  
A. Kawasaki ◽  
K. Matsuoka ◽  
J. Kasahara ◽  
...  
Keyword(s):  
Rotating Detonation Engine ◽  
Detonation Engine ◽  
Rotating Detonation
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