Results 251 to 260 of about 627,886 (336)

Propagation and heat release characteristics of rotating detonation in a ramjet engine with a divergent combustor

The Physics of Fluids
Three-dimensional numerical simulations with detailed chemistry were conducted on a rotating detonation ramjet engine (RDRE) fueled by ethylene.
Yuting Chen, Shijie Liu, Haoyang Peng, Shenghui Zhong, Hailong Zhang, Xueqiang Yuan, Wei-jie Fan, Weidong Liu   +7 more
semanticscholar   +1 more source

Multiplicity for idealized rotational detonation waves

Physics of Fluids, 2021
Simulations of three-dimensional rotational detonation waves are conducted to understand the mechanisms of wave bifurcation. A compressible reacting Euler solver is developed within the framework of OpenFOAM, and a fixed mass flux boundary condition is developed to avoid complex injector dynamics. Influences of inflow mass flow rates and initiations of
Peiyu Zhang, Patrick A. Meagher, Xinyu Zhao   +2 more
openaire   +1 more source

Instabilities of Rotating Detonation

2019
In order to investigate the combustion phenomena of rotating detonation of H2/air, ground experiments under different airflow rates at equivalence ratio of 1.0 are operated in an annular rotating detonation combustor (RDC), which uses the non-premixed mixture injection scheme. The airflow rates vary from 75 to 225 g/s.
Haocheng Wen, Qiaofeng Xie, Bing Wang
openaire   +1 more source

Effects of detonation wave direction and moment of inertia on the performance and flow structures of a disk rotating detonation combustor

The Physics of Fluids
This study presents a systematic investigation of turbine-coupled disk rotating detonation combustor (RDC) dynamics, establishing novel relationships between detonation wave direction, turbine inertia, and flow field characteristics.
Jiangeng Ma, Han Peng, Yue Huang, Zhipeng Sun, Zijun Zhou, Yancheng You   +5 more
semanticscholar   +1 more source

Liquid fuels in rotating detonation engines: Advances and challenges

The Physics of Fluids
The rotating detonation engine (RDE) has attracted considerable interest as a potential new propulsion system, owing to its ability to self-pressurize, its high thrust-to-weight ratio, and its simple structure.
Yuejin Zhu, Shunli Zhang, Huangwei Chen, Yu Wu   +3 more
semanticscholar   +1 more source

The influence of plug nozzle and Laval nozzle on the flow field and performance of non-premixed rotating detonation combustor

The Physics of Fluids
With the rotating detonation engine's (RDE) development to engineering applications, the selection and optimization of nozzle is garnering great concerns, with the aim to maximize the performance benefits of this pressure gain propulsion system.
Yunzhen Zhang, Miao Cheng, Xiangyang Liu, Guangyao Rong, Zhaohua Sheng, D. Shen, Kewen Wu, Jianping Wang   +7 more
semanticscholar   +1 more source

Rotating Detonation Wave in an Annular Gap

Proceedings of the Steklov Institute of Mathematics, 2018
The authors consider the three-dimensional Euler equations of an ideal multicomponent reacting mixture that describe combustion of an air-fuel mixture in an annular gap. The system is studied numerically, using high-performance computers. Air is considered as an oxygen-nitrogen mixture, the fuel is gaseous.
Levin, V. A., Manuylovich, I. S., Markov, V. V.   +2 more
openaire   +2 more sources

Heat transfer characteristics of H2/air rotating detonation combustor

The Physics of Fluids
The heat release process in a rotating detonation combustor (RDC) exhibits highly transient characteristics, posing significant demands on the thermal protection and management of the rotating detonation engine (RDE). In this work, the wall heat transfer
Yanming Qiu, Yu-wen Wu, Yakun Huang, Qun Li, Chunsheng Weng   +4 more
semanticscholar   +1 more source

Detonation Wave Propagation in Rotational Gas Flows

Journal of Applied Mechanics and Technical Physics, 2004
This paper studies the propagation of detonation and shock waves in vortex gas flows, in which the initial pressure, density, and velocity are functions of the distance from the symmetry axis. Rotational axisymmetric flows having a transverse velocity component in addition to nonuniform longitudinal velocity are considered.
Levin, V. A., Skopina, G. A.
openaire   +2 more sources

Large-Eddy Simulation Study of Flow and Combustion Dynamics in a Full-Scale Hydrogen-Air Rotating Detonation Combustor-Stator Integrated System

Journal of Engineering For Gas Turbines and Power
A first-of-its-kind large-eddy simulation (LES) study is conducted to numerically investigate the combustion dynamics as well as aero-thermal phenomena in a full-scale non-premixed hydrogen-air rotating detonation engine (RDE) integrated with nozzle ...
Pinaki Pal, J. Braun, Yiqing Wang, V. Athmanathan, Guillermo Paniagua, Terrence R. Meyer   +5 more
semanticscholar   +1 more source