13“ 비대칭 DPF 내 형상에 따른 배압 및 유동균일도 영향에 관한 전산해석연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 31; no. 6; pp. 614 - 621
• Main Authors: 한단비(DANBEE HAN), 변현승(HYUNSEUNG BYUN), 백영순(YOUNGSOON BAEK)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2020
• Subjects: 기계공학; Computational fluid dynamics (CFD, 전산유체해석); Flow uniformity(유동균일도); Exhaust pressure drop(배압); Diesel(디젤); Exhaust gas(배기가스)
• ISSN: 1738-7264; 2288-7407

Recently, as the fine dust is increased and the emission regulations of diesel engines are strengthened, interest in diesel soot filtration devices is rapidly increased. In particular, there is a demand for technology development for higher efficiency of diesel exhaust gas after-treatment devices. As part of this, many studies conducted to increase the exhaust gas treatment efficiency by improving the flow uniformity of the exhaust gas in the DPF and reducing the pressure drop between the inlet and outlet of disel particle filter (DPF). In this study, computational fluid dynamics (CFD) simulation was performed when exhaust gas flows into the canning reduction device equipped with a 13" asymmetric DPF in order to maintain the flow uniformity in the diesel exhaust system and reduce the pressure. In particular, a study was conducted to find the geometry with the smallest pressure drop and the highest flow uniformity by simulating the DPF I/O ratio, exhaust gas temperature, inlet-outlet pressure and flow uniformity according to the geometry and hole size of distributor.