KTX산천 공기저항 저감 방안 연구

초록

This paper describes aerodynamic drag methods for KTX-SanChon. Aerodynamic drag of a set of KTX-SanChon is computed and analyzed. The aerodynamic drag ratio of Front-car and Rear-car is about 23% and 19%, the Middle-cars is about 46% and the bogies is about 10% respectively. Specially, additional aerodynamic drag appears on the Front-car and Rear-car by the dynamic pressure increase on the pantograph recess area and the extruded part of the second car. For the aerodynamic drag reduction of KTX SanChon, aerodynamic optimization on the nose shape, the extrude part reduction and the side bogie cover were applied and the effect of aerodynamic drag reduction was obtained by the computational fluid dynamics.