Calculation And Analysis Of Ventilation In The Power Room Of A Subway Shunting Locomotive

After decades of rapid economic development,China's urbanization process is accelerated,the urban population increases year by year,the traffic problem is becoming more and more serious,has attracted the attention of a great people,people also more and more high to the requirement of transportation.For the transport of traffic and subway,high speed fast,on time rate,security,stronger,less pollution,etc,known as "green traffic",the development of subway is more and more people's attention.The subway has become a people more concentrated place,personnel density is high,its move room environment temperature affected locomotive reliability,security.Therefore,reasonable design of the subway car move room ventilation structure become a top priority.This study in subway car move chamber as the research object,using 3D software Creo software for sub'way car move room to conduct three-dimensional entity model.The powerhouse of the three-dimensional model into FLUENT software processor network partitioning before,in the post-processor of dynamic indoor air flow numerical simulation.Calculated by the FLUENT software under different conditions the power of indoor air flow velocity vector field,pressure field and temperature field.Results show that the export powerhouse,and the flow rate of the upper channel is larger,that the whole liquidity powerhouse is better,can effectively by lateral wall and outside air natural convection heat dissipation;Pressure are mainly concentrated in the outlet,can increase to reduce the number of vent outlet pressure;Average power under different working condition of the ministry of interior temperature below 80 ?,and the basic requirements.Due to the large power ministry of interior pressure,it is necessary to further optimize design,set up in the back of my power house two vents,after calculating the optimization solution can be found about 144 pa,compared to the original scheme reduces the power of indoor pressure got very big improvement.The purpose of this paper is to use computer simulation technology,combined with the mathematical model of the air duct design,design for metro design personnel and management personnel to provide the reference,in order to achieve the test cost and development cycle,production costs are satisfactory results.