Research Of The High Speed Train Aerodynamics Responsing On The Basis Of TSI Standards

British,French,German,Japanese,etc in the world of high speed railway highly developed countries have already carried out the study of the train aerodynamics;Current research method of center of gravity by the steady effect problem such as the initial air resistance has turned to the horizontal wind,train meeting pressure wave and the train through the tunnel platform unsteady effect problem.Train aerodynamics research in China starts late,but with the emergence of high speed rail structure in our country,high-speed train speed is improving,train aerodynamics characteristics more and more get the attention of people.High-speed train is on the ground speed under a lot of length to diameter ratio of narrow object,the shape is more complex,around the air flow of the train is fully three-dimensional flow,each part of the train can show different air flow field.Or a series of such as high-speed passing buildings along with train meeting,ground effect,vulnerable to the interference of horizontal wind,what will produce tunnel entrances and exits through the tunnel effect.Complex surroundings,etc.will produce a very different aerodynamic problems with aerospace.The European commission on February 21,2008,the committee resolution passed the high-speed rail system on euronext railway locomotive vehicle subsystem interoperability specification(TSI),in the TSI standards 6.2.6 environment requirements,It systematically provides high-speed train should satisfy the conditions of load,side wind conditions and tunnel pressure change,and detailedly gives the comparison of the specific test methods.Based on the high speed test train as test object,according to the TSI standards,it studies the influence of the high speed train on air pressure load under the different conditions,including the influence of train through the platform to the human body,the running state of high-speed train in the operation of the horizontal wind conditions,and the atmospheric pressure variation of the train through the tunnel,and verifies the selection scheme and the rationality of the approach.And it set up three-dimensional emu and turbulence structure geometry model,based on the three-dimensional unsteady incompressible RANS equation and k-? SST of the two sides process model for calculating the turbulent flow and used through the fluid analysis software STAR-CCM + on emu geometric model simulation analysis under the condition of the horizontal wind,and compared with the measured data.Based on digestion and absorption in TSI standard aerodynamic testing requirements as the foundation,with the help of the ring rail,an second-line of lanxin,and China standard the emu daxi experiment line as the backing,it determined the corresponding test method and platform,and applied to the latest generation of our country independent intellectual property rights of the aerodynamic performance of high-speed emu test,studied and verified the applicability of the TSI standards,and analyzed the TSI standards and on this basis,studied on the TSI standard train aerodynamic performance under the applicable scope and requirements,established that meets European standards of train aerodynamics test plan,including the required software and hardware environment,data acquisition and processing method of aerodynamic performance evaluation method.And on this basis putted some forward opinion and constructive solutions.