Study On The In Of Passengers' On And Off On The Thermal Environment In Subway

In the context of the promotion of domestic policy and its own superiority and economy,the train has gained more and more pedestrians' approval for its high speed,convenience,safety,energy saving and environmental protection.Moreover,The pace of urbanization construction continues to advance,subway development has become a mitigation of urban traffic pressure should have the necessary conditions.But whether it is ordinary train,high-speed train or subway train development is a gradual upgrading of the gradual upgrading of the process,and train interior thermal environment construction as an important part of the development of train technology,over the years by its own existence of the closed,complex Variability and other characteristics of the constraints,if people want to break through this technical bottleneck in order to obtain a higher car thermal comfort,it is necessary on the basis of existing considerations on the possible impact on the compartment environment factors,detailed analysis.Prior to this,many scholars on the subway train interior environment were studied,but the train parked near the train door near the compartment side of the environmental changes in the lack of research.Considering all the factors that can affect the thermal environment in the car,this paper puts forward the research on the change of the side of the car near the door during the frequent opening and closing of the train.The research is based on the fact that the train speed increases the station and station The distance between the opening and closing frequency of the train door will be increased accordingly,and the frequency of the passengers on the compartment environment will be indirectly increased.Secondly,in the process of opening and closing the train,the passengers will get off Different forms will also lead to the difference between the degree of air flow between the carriage and the station,followed by the temperature field and the flow field near the train door will have an impact on the comfort of the passenger.Firstly,the computational fluid dynamics(CFD)in the dynamic grid technology is simulated,the simulation results show that the number of passengers on and off the bus arrangement,the different influence on the thermal environment(the degree of load change or temperature variation etc.)will be the same.Secondly,the waiting line of Beijing respectively inside the No.8 subway line stations and trains near the gate area of the environmental parameters measured,the measured data were analyzed to open out the door when the piston wind on the site at the wind speed to the lowest attenuation(i.e.to the train station stop in the car when the directly affected the piston wind is very small);finally,tested through experiments on the actual working conditions,the staff in and out for in and out and the number of different ways lead to different results,which is consistent with the simulation results.And through the comprehensive analysis of the simulation,experiment and test results,this paper presents the use of shielding door air curtain or screen door arranged on both sides of the air outlet by way of solving the problem,in order to reduce the influence of environment on the platform of thermal environment to provide a theoretical basis for the future construction of a more comfortable environment control system...