Effects of expanding zone parameters of vacuum dust suction mouth on flow simulation results
来源期刊：中南大学学报(英文版)2014年第6期
论文作者：ZHANG Yi-cheng(章易程) YANG Chun-zhao(杨春朝) Chris Baker CHEN Mo(陈默) 邹翔 DAI Wan-lin(戴万林)
文章页码：2547 - 2552
Key words：dust suction mouth; expanding zone; threshold analysis; computational fluid dynamics
Abstract: Based on the parametric analysis of the expanding zone of the vacuum dust suction mouth, the flow in the vacuum dust suction mouth was simulated by computational fluid dynamics (CFD) software, Fluent. The effects of the expanding zone parameters on flow simulation were analyzed. The results show that simulation effects depend on threshold values of the expanding zone parameters of the dust suction mouth, and the threshold values of the expanding zone can be obtained according to the different structures of the vacuum dust suction mouth and be selected as the geometric parameters in calculating, and also corners of the expanding zone make unobvious difference in calculation accuracy and in computational efficiency compared with no corner. The simulation results provide practical guidance to the flow simulation on the dust suction mouth.
ZHANG Yi-cheng(章易程)1, YANG Chun-zhao(杨春朝)1, Chris Baker2, CHEN Mo(陈默)1, ZOU Xiang(邹翔)1, DAI Wan-lin(戴万林)1
(1. School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China;
2. Centre for Railway Research and Education, University of Birmingham, Birmingham, Edgbaston, UK)
Abstract:Based on the parametric analysis of the expanding zone of the vacuum dust suction mouth, the flow in the vacuum dust suction mouth was simulated by computational fluid dynamics (CFD) software, Fluent. The effects of the expanding zone parameters on flow simulation were analyzed. The results show that simulation effects depend on threshold values of the expanding zone parameters of the dust suction mouth, and the threshold values of the expanding zone can be obtained according to the different structures of the vacuum dust suction mouth and be selected as the geometric parameters in calculating, and also corners of the expanding zone make unobvious difference in calculation accuracy and in computational efficiency compared with no corner. The simulation results provide practical guidance to the flow simulation on the dust suction mouth.
Key words:dust suction mouth; expanding zone; threshold analysis; computational fluid dynamics
