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Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (6): 1193-1199.DOI: 10.7522/j.issn.1000-694X.2017.00094

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Optimization of Key Design Parameters of the Aviation Baffle Engineering of Railway Based on Design Exploration Method

Xin Lingui, Cheng Jianjun, Wang Lian, Zhi Lingyan   

  1. College of Water Resources and Architectural Engineering, Shihezi University, Shihezi 832003, Xinjiang, China
  • Received:2017-09-16 Revised:2017-11-29 Online:2018-11-20 Published:2018-12-05

Abstract: In this paper, the numerical simulation and optimization analysis methods are used to study the characteristics of wind sand flow field of the aviation baffle engineering along the railway line, and the main influence parameters of the aviation baffle engineering are analyzed. The results show that:(1) The aviation baffle project transports the wind sand flow, and an acceleration zone forms under the deflector outlet within a certain range, so that the particles flow passes through the protected area in the form of non-accumulation.(2) The upper components of the railway obstruct the effect of the aviation baffle at the rear rail velocity reduction zone, resulting in the deposition of sand.(3) The aviation baffle is arranged on both sides of the railway using a small angle and a large outlet height of the wind guide plate, which can reduce the accumulation of sand in the vicinity of the railway, so that smooth flow passes through the protected area.(4) The horizontal inclination of the wind deflector is positively correlated with the mass flow rate of the sand before the rail and the wind speed of the track. The height of the outlet is negatively correlated with the mass flow rate of the sand before the rail and the track wind speed, and the dominant factor is the height of lower outlet.

Key words: numerical simulation, optimization analysis, aviation baffle engineering, wind sand flow

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