Surface Pressure Characteristics over Indian Train Engine

In the present study, the surface pressure distribution of an Indian train engine was experimentally investigated. A scaled model of the engine was tested at different Reynolds numbers ranging from 3.22 × 104 to 14.49 × 104. The variation of aerodynamic drag and pressure distribution with Reynolds number were studied. The results show that the pressure distribution is not significantly affected with the Reynolds number and a maximum coefficient of drag of 0.6005 is obtained at a Reynolds number of 6.44 × 104. The mean drag was also calculated for further understanding of drag characteristic of the engine model.