Analysis on controlling factors of deposited particle reentrainment in the pipe flow

作者：Huang Ying; Ning Zhi^*; Song Yun Chao; Fu Juan

来源：Transactions of CSICE, 2012, 30(1): 42-48.

• Controlling factors
• Diesel engine exhaust
• Gas velocity
• Multiple factors
• Particle adhesion
• Particle deposits
• Particle diameters
• Particle re-entrainment
• Re-entrainment
• Static model
• Tube diameters

Particle deposit and reentrainment are important phenomena in the process of trapping and sampling of diesel engine exhaust particles, and is influenced by multiple factors, such as particle diameter, gas velocity, particle adhesion state on wall, pipe circumstance, et al. The controlling factors of particle reentrainment in the pipe flow were analyzed based on the static models of particle reentrainment. Calculation results show that the adhesion angle, average flow velocity and tube diameter have large effect on the reentrainment of diesel engine exhaust particles in the pipe flow. The influence of adhesion angle, average flow velocity and tube diameter on the reentrainment of diesel engine exhaust particles in the pipe flow was understood through the analysis.

• 出版日期2012
• 单位北京交通大学