금속섬유 DPF 시스템 최적화를 위한 CFD 시뮬레이션 연구

다국어 초록 (Multilingual Abstract)

Diesel Particulate Filter (DPF) system is one of the promising methods to reduce diesel engine exhaust particulates which cause environmental pollution. Metal fiber DPF system cheaper and more enduarable than ceramic filter, the regeneration near the wall (outer layer) is difficult beause of the heat loss and the less gas flow rate near the wall. The uniform flow across the filter is very important to increase the regeneration efficiency of the DPF system. A 3D CFD simulation is performed to investigate the effects of major factors on the mass flow through the channel of each metal fiber filter layers. The major factors are change of filter porosity, various porosity of layer, distribution plate shape, size, location and swirler. The flow control by both of the distribution plate and swirler together was effective. In this work, the shape of the distribution plate and swirler are optimized through the CFD simulations.