| 제목 |
DPF의 배기가스 유동 및 포집에 관한 다차원 모델링 연구 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
김동균(한남대학교), 윤천석(한남대학교) |
| Key Words |
DPF(Diesel Particulate Filter, 매연여과장치), PM(Particulate Matter,입자상 물질), Loading(포집), CFD(Computational Fluid Dynamics, 전산유체역학), Transient state(과도상태), UDF(User Defined Functions; 사용자지정함수) |
| 초록 |
In order to understand the flow and filtration characteristics in a wall-flow type DPF(Diesel Particulate Filter), 0-D, 1-D, and 3-D simulations are preformed. In this paper, three model are explained and validated with each other. Based on the comparisons with 1-D and 3-D results for the steady state solution, 3-D CFD analysis is preferable to 1-D for the prediction of wall velocity at the inlet and exit plane. Because PM loading process is transient state phenomena, the combination of full 3-D and time dependent simulation is crucial for the configuration of wall channels. New coupling technique, which is the connection between calculated permeability from 0-D lumped parameter model and UDF(User Defined Functions) of main solver, is proposed for the realistic simulation. |
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