Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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CFD Analysis on Effect of Pressure Drop and Flow Uniformity with Geometry in 13" Asymmetric DPF

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

  • HAN, DANBEE (Department of Environment-Energy Engineering, College of Engineering, University of Suwon) ;
  • BYUN, HYUNSEUNG (Department of Environment-Energy Engineering, College of Engineering, University of Suwon) ;
  • BAEK, YOUNGSOON (Department of Environment-Energy Engineering, College of Engineering, University of Suwon)
  • 한단비 (수원대학교 공과대학 환경에너지공학과) ;
  • 변현승 (수원대학교 공과대학 환경에너지공학과) ;
  • 백영순 (수원대학교 공과대학 환경에너지공학과)
  • Received : 2020.12.07
  • Accepted : 2020.12.30
  • Published : 2020.12.30
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Abstract

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.

Keywords

References

  1. S. M. Lee, S. C. Jung, and W. S Yoon, "Multi-dimensional modeling and efficiency analysis study of PM and NOx redection by aftertreatment system(DOC-DPF-SCR) of diesel exhaust gases", KSAE, 2009, pp. 257-266. Retrieved from http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01506605.
  2. B. Choi and J. Cho, "Study on the improvement of uniformity of inlet velocity in exhaust after-treatment system for system for heavy duty engine", KSAE, 2002, pp. 357-360. Retrieved from http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00594760&language=ko_KR.
  3. S. Jeong, W. Lee, G. Lee, K. Kim, S. Bae, and H. Kim, "A study on flow characteristics in diesel particle filter for heavy-duty diesel engine", KSAE, 2006, pp. 280-284.
  4. J. K. Park and I. S. Chung, "Trends in technology of diesel particulate trap system", Transactions of the KSAE, Vol. 17, No. 3, 1995, pp 1-10.
  5. S. C. Jung and W. S. Yoon, "A detailed examination of various porous media flow models for collection efficiency and pressure drop of diesel particulate filter", Transactions of the KSAE, Vol. 15, No. 1, 2007, pp. 77-88. Retrieved from https://www.koreascience.or.kr/article/JAKO200734514888225.page.
  6. E. J. Bissett, "Mathematical model of the thermal regeneration of a wall-flow monolith diesel particulate filter", Chem. Eng. Sci., Vol. 39, No. 7-8, 1984, pp. 1233-1244, doi: https://doi.org/10.1016/0009-2509(84)85084-8.
  7. A. Konstandopoulos, V. Skaperdas, J. Warren, and R. Allanson, "Optimized filter design and selection criteria for continuously regenerating diesel particulate traps", SAE Paper 1999-01-0468, 1999, doi: https://doi.org/10.4271/1999-01-0468.
  8. Y. J. Kim, D. B. Han, T. W. Seo, K. C. Oh, and Y. S. Baek, "Effect of particulate matter and ash amount on pressure drop and flow uniformity of diesel particulate filter reduction system", Clean Technol., Vol. 26, No. 1, 2020, pp. 22-29, doi: https://doi.org/10.7464/ksct.2020.26.1.22.
  9. G. I. Yeom, D. B. Han, Y. J. Kim, S. H. Nam, and Y. S. Baek, "Optimization study for improving flow uniformity of diesel particulate filter through CFD analysis", International Journal of Innovations in Engineering and Technology, Vol. 11, No. 3, pp. 86-93, 2018. Retrieved from https://www.semanticscholar.org/paper/Optimization-Study-for-Improving-Flow-Uniformity-of-Gyuin-Danbee/6b5bdcbb19afbc7b6facc9085a41751998a74d6e.
  10. B. E. Launder and B. I. Sharma, "Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc", Letters in Heat and Mass Transfer, Vol. 1, No. 2, 1974, pp. 131-137, doi: https://doi.org/10.1016/0094-4548(74)90150-7.
  11. A. Konstandopoulos, M. Kostoglou, N. Vlachos, and E. Kladopoulou, "Progress in diesel particulate filter simulation", SAE Technical Paper 2005-01-0946, 2005, doi: https://doi.org/10.4271/2005-01-0946.
  12. H. Weltens, H. Bressler, F. Terres, H. Neumaier, and D. Rammoser, "Optimisation of catalytic converter gas flow distribution by CFD prediction", SAE Technical Paper 930780, 1993, doi: https://doi.org/10.4271/930780.
  13. S. Mokhtari, V. V. Kudriavtsev, and M. Danna, "Flow uniformity and pressure variation in multi-outlet flow distribution pipes", Advances in Analytical, Experimental and Computational Technologies in Fluids, Structures, Transients and Natural Hazards, ASME, PVP-Vol. 355, 1997, pp. 113-122. Retrieved from https://www.researchgate.net/publication/291977033_Flow_uniformity_and_pressure_variation_in_multi-outlet_flow_distribution_pipes.
  14. S. U. Lee, D. R. Lim, S. K. Lee, M. J. Kim, and H. K. Jang, "Characteristics of air flow through a DPF channel", Proceedings of the Fourth National Congress on Fluids Engineering, 2006, pp. 1051-1054. Retrieved from http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01172646&language=ko_KR.