Results 31 to 40 of about 34,611 (247)

Supersonic Combustion Mode Analysis of a Cavity Based Scramjet

Aerospace, 2022
Since flame stability is the key to the performance of scramjets, scramjet combustion mode and instability characteristics were investigated by using the POD method based on a cavity-stabilized scramjet. Experiments were developed on a directly connected
Yu Meng, Wenming Sun, Hongbin Gu, Fang Chen, Ruixu Zhou   +4 more
doaj   +1 more source

Combustion Driven Oscillation

Journal of the Fuel Society of Japan, 1971
The combustion in propulsion engines or industrial furnaces is never perfectly smooth and is usually accompanied with random fluctuations in the combustion rate as well as in pressure and velocity. When the pressure fluctuation becomes in phase with the fluctuation in the heat release rate of combustion, the fluctuation will develop into the organized ...
openaire   +2 more sources

Servo-Stabilization of Low-Frequency Oscillations in a Liquid Bipropellant Rocket Motor [PDF]

, 1953
The recent work of H. S. Tsien concerning the servostabilization of rocket motors is extended to the liquid bipropellant rocket motor. It is shown that by use of a feedback system containing a device to sense the combustion chamber pressure, a suitably ...
Cox, Dale W., Jr., Marble, Frank E.
core   +1 more source

Experimental Study of Influence of Secondary Combustion on Combustion Characteristics of Axial Staged Combustor

Shanghai Jiaotong Daxue xuebao
In order to obtain the influencing rule of secondary combustion on emissions and combustion oscillation characteristics of gas turbine axial staged combustor in non-premixed combustion mode and explore a load increasing mode with stable low emission, an ...
SUI Yongfeng, ZHANG Yuming, ZANG Peng, JIA Yuliang, HENG Sijiang, FU Yanni, GE Bing
doaj   +1 more source

Modeling for Active Control of Combustion and Thermally Driven Oscillations [PDF]

, 1991
Organized oscillations excited and sustained by high densities of energy release in combustion chambers have long caused serious problems in development of propulsion systems.
Culick, F. E. C., Jahnke, C. C., Lin, W. H., Sterling, J. D.   +3 more
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Effects of LOX Particle Diameter on Combustion Characteristics of a Gas-Liquid Pintle Rocket Engine

International Journal of Aerospace Engineering, 2020
LOX/GCH4 pintle injector is suitable for variable-thrust liquid rocket engines. In order to provide a reference for the later design and experiments, three-dimensional numerical simulations with the Euler-Lagrange method were performed to study the ...
Xuan Jin, Chibing Shen, Rui Zhou, Xinxin Fang   +3 more
doaj   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Oscillating flames in micro-combustion

Combustion and Flame, 2016
New experimental results that demonstrate the existence of oscillating flames in micro-combustion are reported here. The results showed the presence of oscillating regimes with different behaviors in the transition between the stable flames, FREI (Flame with Repetitive Extinction and Ignition), and weak flames.
Di Stazio, Annalisa, Chauveau, Christian, Dayma, Guillaume, Dagaut, Philippe   +3 more
openaire   +3 more sources

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source