Simulation of Blade Erosion of Variable-pitch Axial Flow Fan

Authors

Chunxi Li, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Minstry (North China Electric Power University), Baoding 071003, China;
Zhang Dan, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Minstry (North China Electric Power University), Baoding 071003, China;
Xuemin Ye, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Minstry (North China Electric Power University), Baoding 071003, China;

Abstract

Abstract: Affected by the performance of dust precipitators, significant differences of blade erosion regimes and erosion rates in induced draft fans are exhibited due to various particle diameters and concentrations. A 3D numerical simulation on a single-stage axial fan is carried out using Fluent to investigate the blade erosion regimes. The important features including particle trajectories under different particle diameters, erosion pattern and particle mass concentration distribution on the pressure and suction surfaces are examined, and the effect of particle mass concentration on erosion rate is analyzed. The results show that the erosion regimes are mainly affected by particle diameter. Differing from a centrifugal fan, most collisions of particles are occurred on the pressure surface, and as particle diameter increases, collision points gradually center on blade leading edge, resulting in severely inhomogeneous erosion. In addition, blade erosion rate is primarily dominated by particle mass concentration, while erosion pattern is negligibly influenced, the erosion rate deteriorates linearly with increasing particle mass concentration.

Recommended Citation

Li, Chunxi; Dan, Zhang; and Ye, Xuemin (2019) "Simulation of Blade Erosion of Variable-pitch Axial Flow Fan," Journal of System Simulation: Vol. 30: Iss. 5, Article 18.
DOI: 10.16182/j.issn1004731x.joss.201805018
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss5/18

First Page

1762

Revised Date

2016-10-02

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201805018

Last Page

1771

CLC

TH4;O355

Recommended Citation

Li Chunxi, Zhang Dan, Ye Xuemin. Simulation of Blade Erosion of Variable-pitch Axial Flow Fan[J]. Journal of System Simulation, 2018, 30(5): 1762-1771.

DOI

10.16182/j.issn1004731x.joss.201805018