Search

Your search keyword '"Ye, Yanghui"' showing total 120 results
Start Over Author "Ye, Yanghui"
120 results on '"Ye, Yanghui"'

38. Experimental Study on Soot Suppression of Acetylene Diffusion Flame by Acoustic-Excited Oscillation in Rijke-Type Burner

Author

Zhu, Yibin, Guo, Hui, Suo, Yan’ge, Wu, Minle, Ye, Yanghui, Li, Guoneng, and Zhang, Zhiguo

Abstract

This work reports that the flame oscillation induced by acoustic excitation can effectively suppress soot generation in Rijke-type burners. When the acoustic frequency is close to the natural frequency of the burner system, it can produce resonance resulting in intense oscillation of the flame. The relationship between the soot suppression efficiency and the acoustic field of standing wave at different flame positions is discussed. Compared with that under self-excited oscillation, when there is external forced acoustic force introduced to the flame, oscillation combustion occurred in a lager zone in the glass tube. The fundamental cause of different soot suppression efficiency at different positions is that the standing wave acoustic field causes the particles to move at different speeds in different positions of the glass tube. The axial particle velocity difference results in the formation of acoustic vortexes and the change of the flame shape. The high particle velocity causes the air in the glass tube to turn into the turbulent condition and make the flame temperature rise. Simulation results show that the surface growth rate of soot is reduced, while the oxidation rate of soot is enhanced, which result in the soot suppression under acoustic oscillation. This study can provide some reference for the practical application of oscillate combustion in soot suppression.

Published
2023
Full Text
View/download PDF

39. Investigation of thermoelectric performance based on thermal load with porous heat collector and traditional heat collector

Author

Wanqi Liu, Cong Dong, Haibo Du, Kaidi Liu, Ye Yanghui, Wenwen Guo, and Bu Zhongming

Subjects
Materials science, Computer simulation, Renewable Energy, Sustainability and the Environment, Nuclear engineering, Energy Engineering and Power Technology, Load distribution, Thermal load, Fuel Technology, Thermoelectric generator, Nuclear Energy and Engineering, Thermoelectric effect, Current (fluid), Porosity, Voltage
Abstract

The thermoelectric performance of a thermoelectric generator based on a porous heat collector, instead of the traditional heat collector, was comprehensively studied. The influence of hot side temperature uniformity on the thermoelectric performance was examined. Under various hot side temperatures, the thermal load distribution, load current, load voltage, and load power of two types of collector plates were tested using the method of control variables. In addition to the experimental tests, the temperature distribution of the collector plates as well as the performance of the thermoelectric generator were numerically simulated and tested. The results showed that the thermoelectric performance estimated by the numerical simulation was consistent with that obtained from the experimental tests. The thermoelectric performance of the thermoelectric generator having a uniform hot side load distribution was noticeable better than of that with a non–uniform hot side load distribution. The thermoelectric generator based on a porous heat collector achieved a better thermoelectric performance output and a higher comprehensive index of the thermoelectric performance than that using the traditional heat collector plate.

Published
2022

50. Treating the phase change of cavitation as the source of vapor inside bubbles.

Author

Ye, Yanghui, Liang, Yangyang, Dong, Cong, Xu, Yousheng, and Zhang, Zhiguo

Subjects
*BUBBLES, *CAVITATION, *GASES, *GAS-liquid interfaces, *PHASE change materials, *GAS mixtures, *CAVITATION erosion
Abstract

Interface capturing methods are effective means to analyze the micromechanism of cavitation. It is complex to handle the phase change for interface capturing methods since it occurs at the narrow gas–liquid interface. This study proposes a new method to handle the phase change: treating it as the source of vapor inside the bubble. The phase change rate is calculated by the constant-transfer model, and the gas phase is an ideal mixture of non-condensable gas and vapor. In the validation part, the cavitation of a spherical bubble is trigged by the Gaussian pulses and harmonic forcing pressure is simulated, which shows good agreements between the proposed model and the constant-transfer model. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results