The Influence of Secondary Air Guide Vanes on the Flow Field and Performance of a Turbine Air Classifier
Year: 2025
Type: article
Abstract: To address the issue where the axial negative velocity on the cylinder wall of the traditional bottom-inlet rotor classifier causes fine particles to be mixed into coarse powder, reducing classification efficiency, this study proposes adding guide vanes to the rotor classifier. By improving the stability of the secondary elutriation flow field, we enhance the secondary classification of coarse particles. Airflow simulations based on ANSYS Fluent show that the guide vanes can significantly strengthen the intensity of the secondary elutriation zone, increase the tangential velocity in the classification zone, and reduce the particle concentration in the secondary air volute. The key results are as follows: when the installation angle is 30°, the classification accuracy reaches its peak with K = 0.71, and the cut size D50 = 48.9 μm. This research provides a theoretical basis for optimizing the structural design of classifiers.
Source: Processes
DOI: 10.3390/pr13072268
Authors: Fulong Wang, Ziwei Zhao, Jiaxiang Peng, Ying Fang
Institution: Nanjing Tech University
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
OpenAlex ID: W4412475960