Results 51 to 60 of about 2,170 (163)

Velocity-Feedback Combustion Oscillation

Bulletin of JSME, 1966
The low-frequency combustion, oscillation occurring in the combustion system comprising a combustion duct, inlet and outlet orifices and a capacity chamber was analyzed as a dynamic instability of "closed loop". From the analysis of experimental facts it was concluded that the exhaust temperature fluctuation as the result of distortion and necking of ...
openaire   +2 more sources

Numerical investigation on the engraving process of a pyrotechnic actuator with an improved two-phase flow model of interior ballistic

Defence Technology
By combining with an improved model on engraving process, a two-phase flow interior ballistic model has been proposed to accurately predict the flow and energy conversion behaviors of pyrotechnic actuators.
Yue Li, Cong Liu, Cheng Cheng, Genghui Jiang   +3 more
doaj   +1 more source

Experiment investigation of the effects of hydrogen content on the combustion instability of methane/hydrogen lean premixed swirl flames under different acoustic frequency ranges

AIP Advances, 2019
Experimental study on combustion instability of lean premixed swirl flame was conducted for methane-hydrogen mixtures, and the influence mechanism of hydrogen content (0%, 10%, 20%, and 40%) on the combustion instability under different acoustic ...
Mingxiao Wang, Yingjie Zhong, Kai Deng
doaj   +1 more source

Experimental investigation on the thermoacoustic instability of boron/ethanol nanofluid fuel spray swirling flames

Applications in Energy and Combustion Science
Nanofluid fuel has attracted the interest of researchers for decades due to its prominent combustion and propulsive properties. However, combustion instability is inevitable in propulsive systems, and little is known about how nanofluid fuel drive or ...
Meng Wang, Zunyi Luo, Chen Fu, Kunpeng Liu, Yongjun Wang, Xiaoyang Wang, Juan Yu, Sheng Meng, Man Zhang, Yi Gao   +9 more
doaj   +1 more source

Influences of oscillation on the physical stability and explosion characteristics of solid‒liquid mixed fuel

Defence Technology
The stratification phenomenon resulting from differences in the physical properties of solid‒liquid components seriously affect the final combustion and explosion characteristics of mixed fuel under the action of oscillation.
Chi Zhang, Ge Song, Hui Guo, Jiafan Ren, Chunhua Bai   +4 more
doaj   +1 more source

Dynamic Response Mechanism of Ethanol Atomization–Combustion Instability under a Contrary Equivalence Ratio Adjusting Trend

Aerospace
This study experimentally explored the effects of equivalence ratio settings on ethanol fuel combustion oscillations with a laboratory-scale combustor.
Chengfei Tao, Rongyue Sun, Yichen Wang, Yang Gao, Lin Meng, Liangbao Jiao, Shaohua Liang, Ling Chen   +7 more
doaj   +1 more source

On Velocity Feedback Combustion Oscillation

Transactions of the Japan Society of Mechanical Engineers, 1963
Low frequency oscillation encountered in combustion system involving entrance resistance, exit resistance and capacity, was studied experimentally as well as theoretically and its nature was clarified. Various factors influencing on the frequency and the amplitude of oscillation, for example, entrance and exit resistance, capacity, shape of burner and ...
openaire   +2 more sources

Analysis of heat release characteristics of methane/air lean premixed bluff-body flames

Xibei Gongye Daxue Xuebao
To investigate the heat release characteristics of methane/air lean premixed bluff-body flames, this study employs experimental methods based on CH* chemiluminescence to examine the effects of equivalence ratio, inlet flow rate, and acoustic excitation ...
WANG Haiqing, LIU Peijin
doaj   +1 more source

Effect of Injector Recess Depth on Flame Structure of Single Injector in Air Heater

Aerospace
To investigate the influence of injector recess depth on the combustion characteristics of air heaters, high-speed shadowgraph imaging technology combined with numerical simulation was employed.
Ke Wang, Chibing Shen, Bo Fan
doaj   +1 more source

External Excitation Effects on Combustion Instability in Dual-Burn-Rate Solid Rocket Motors With a Large Aspect Ratio

International Journal of Aerospace Engineering
This study is aimed at addressing combustion instability phenomena observed during the operation of dual-burn-rate Solid Rocket Motors (SRM) with a large aspect ratio.
Wenhao Yu, Mengjie Zhang, Huixin Yang, Lei Han, Junbiao Zhan, Shipeng Li   +5 more
doaj   +1 more source