Flow field numerical simulation and experiment for a new type of dust suction apparatus based on dust start-up characteristics

被引：0

作者：

Hu J. ^{[1
]}

Zhang L. ^{[1
,2
]}

Shi T. ^{[3
]}

Qiu X. ^{[2
]}

机构：

[1] School of Mechanical and Electrical Engineering, Central South University, Changsha

[2] School of Mechanical Engineering, Hunan University of Technology, Zhuzhou

[3] China Railway Construction Heavy Industry Co. Ltd., Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 09期

关键词：

Blow-sweep-suction; Dust suction apparatus; Flow field simulation; Gas-solid two-phase flow; Railway ballast bed;

D O I：

10.11817/j.issn.1672-7207.2020.09.009

中图分类号：

学科分类号：

摘要：

According to the requirements of different suction conditions on the surface of railway ballast bed, in view of the efficienoy deficiencies of the original product, a new structure of dust suction was proposed. The physical and mathematical models were established to study the start-up principle of dust particles in different operation modes, and the suction efficiency with different parameters was simulated and analyzed by using computational fluid dynamics technology. Subsequently, the airflow phase and particle phase in the suction apparatus were simulated. The experimental results of two operation modes were verified and compared. The results show that the blow-suction mode is suitable for the less dust conditions, while the blow-sweep-suction mode can satisfy the conditions of larger dirt and thicker accumulation, especially for the collection of pulverized coal in the special line for coal transportation. © 2020, Central South University Press. All right reserved.

引用

页码：2442 / 2450

页数：8

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