Simulation of erosion by a particulate airflow through a ventilator

9th International Conference on Compressors and their Systems

Ghenaiet, A.^1

Faculty of Mechanical and Process Engineering, University of Sciences and Technology, USTHB, BP32 El-Alia, Algiers, Bab-ezzouar

16111, Algeria^1

关键词: Aero-dynamic performance;    Erosion patterns;    Impact frequency;    La-grangian approaches;    Numerical results;    Particle trajectories;    Particulate flows;    Solid particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/90/1/012054/pdf
DOI  :  10.1088/1757-899X/90/1/012054

来源: IOP

【 摘 要 】

Particulate flows are a serious problem in air ventilation systems, leading to erosion of rotor blades and aerodynamic performance degradation. This paper presents the numerical results of sand particle trajectories and erosion patterns in an axial ventilator and the subsequent blade deterioration. The flow field was solved separately by using the code CFX- TASCflow. The Lagrangian approach for the solid particles tracking implemented in our inhouse code considers particle and eddy interaction, particle size distribution, particle rebounds and near walls effects. The assessment of erosion wear is based on the impact frequency and local values of erosion rate. Particle trajectories and erosion simulation revealed distinctive zones of impacts with high rates of erosion mainly on the blade pressure side, whereas the suction side is eroded around the leading edge.