Study on the aerodynamic force which acts in the case of a train type multiple unit electric

Abstract

Abstract This paper seeks to analyse the values of the aerodynamic resistance forces occurring during the movement of a train type multiple unit electric whit are running in Romania. Taking into account what has been said so far in the literature, regarding the fact that the aerodynamic forces acting on the vehicles are directly proportional to the square of the traveling speed, it is intended to estimate the values of these forces in the case of the proposed train for analysis. An exact determination is difficult to achieve and requires very high costs in terms of both the measuring equipment and the actual realization of the experiment. To avoid this, we will opt for a numerical analysis of aerodynamic force measurements. In this regard, the geometric shape of the train will be first modelled and then inserted into an airflow simulation program.