Abstract
The effect of high-speed train head shape on its aerodynamic performance is very important. In order to prove the effect of longitudinal profile shape of train head on aerodynamic performance, using CFD method, a two dimension model is developed to investigate outer flow field of high speed train head. Three types of train head profile schemes are calculated. The effects of longitudinal profile shape of high speed train head on aerodynamic performance are analyzed. The results show that different head profile curves cause different surface pressure distributions of body, different airflow velocities of outer flow field and different turbulent distributions. If the longitudinal profile shape of train head is spindle and streamline length of train head is 8m, aerodynamic drag of the train will well reduce.
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