Numerical simulation and improvement of the hot air system in a train service shop of high speed railway

Takes the train service shop of high speed railway between Beijing and Shanghai as an example, adopts CFD methods to simulate the effects of hot air system which is a part of combined heating system and located under the train. Based on eight typical cases, simulates the air velocity distribution, air temperature distribution, PMV distribution and heat flux density through the train surface, and finds proper locations of air supply inlet and optimal air supply parameters.