Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Detailed Examination of Various Porous Media Flow Models for Collection Efficiency and Pressure Drop of Diesel Particulate Filter

DPF의 PM 포집효율 예측을 위한 다양한 다공성 매질 유동장 모델 해석

  • Jung, Seung-Chai (Graduate School, Department of Mechanical Engineering, Yonsei University) ;
  • Yoon, Woong-Sup (Department of Mechanical Engineering, Yonsei University)
  • 정승채 (연세대학교 대학원 기계공학과) ;
  • 윤웅섭 (연세대학교 기계공학과)
  • Published : 2007.01.01
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Abstract

In the present study a detailed examination of various porous media models for predicting filtration efficiency and pressure drop of diesel particulate filter (DPF), such as sphere-in-cell and constricted tube models, are attempted. In order for demonstrating their validities of correct estimation on permeability, geometry of property configurations common in commercial cordierite DPFs are correlated to the porous media flow models, and validations of predicted filtration efficiencies due to the use of different unit collectors are made with experiments. The result shows that the porosity, pore size and permeability of cordierite DPF can be successfully correlated by Kuwabara flow field with correction factor of 0.6. The unit collector efficiency predicted by sphere-in-cell model agrees very well with measurements in accumulation mode, whereas that by constricted tube model with significant prediction error.

Keywords

References

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