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基於CFD的城市軌道交通車廂空氣質量模擬分析

Air Quality of Urban Railway Carriage Based on CFD Simulation

  • 摘要: 城市軌道交通車廂的人員密度較高,車廂內的空氣質量對乘坐體驗及健康具有顯著影響。以城市軌道交通列車車廂為例,采用CFD軟件Fluent2019對正常載客情況下軌交車廂內空氣質量進行數值模擬,分析空調送風風速為2🦸🏿‍♂️、2.5👨🏼‍🏫、3 m/s和送風角度30°、45°👲🏻、90°的溫度場、速度場💲、汙染物濃度場情況,提出在常態化防疫背景下🗑,保證車廂最佳的空氣流通率的通風方式為上送下回,送風速度為3 m/s、送風角度為垂直90°。

     

    Abstract: The air quality in the urban railway carriages has a significant impact on travelling experience and health conditions because of relatively high passenger density. Taking the train carriage of urban rail transit as an example, the computational fluid dynamics(CFD)FLUENT2019 is used to numerically simulate the air quality in the urban railway compartment with normal passenger load. The temperature distribution, velocity distribution and pollutant concentration distribution are analyzed by supply air speed of 2 m/s, 2.5 m/s and 3 m/s and supply air Angle of 30°, 45° and 90°, respectively. It is proposed that under the background of normalized epidemic prevention, the ventilation mode to ensure the best air circulation rate of the carriage is upper supply and lower return, the air supply speed is 3m/s and the air supply Angle is vertical 90°.

     

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