대형 배기 후처리 장치 입구 유속의 균일도 향상에 대한 연구

In this paper, flow structures in several kinds of DEAS(Diesel Exhaust After-treatment System) were calculated by CFD analysis. When the exhaust gas passed through the bending portion of inlet pipe and diffuser, flow structure was highly distorted by centrifugal force and flow separation for the default system. changing the shape of diffuser reduced the flow resistance of system and installing the artificial impedance in diffuser improved the uniformity of velocity passing through the catalyzed substrate.