Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Numerical Analysis on Flow Uniformity According to Area Ratio and Diffuser Angle in an SCR Reactor of a 500 PS-Class Ship

500 PS급 선박 SCR 반응기에서 디퓨저 각도와 면적비에 따른 유동균일도 수치해석

  • Received : 2015.02.17
  • Accepted : 2015.06.09
  • Published : 2015.08.15
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Abstract

Because flow uniformity affects the life cycle and performance of the catalyst, it is an important design factor for selective catalytic reduction (SCR) systems. We examined how the diffuser angle and the area ratio of the inlet of the SCR reactor to the front of the catalyst affect flow uniformity. For the numerical analysis, we used STAR-CCM+, a common CFD software program. Analysis results showed that the larger the area ratio was, the less the flow uniformity was, and that the longer the diffuser length was, the greater the flow uniformity was. When the area ratio was greater than 1:5, the flow uniformity appeared very similar at the front of the catalyst. As a result, the spread time of the exhaust gas increased and the flow velocity decreased.

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References

  1. Lee, J. W., Choi, H. K., Yoo, G. J., 2010, Numerical Study on the Mixer Type of Uear-SCR System for Flow Mixing Improvement, Korean Society for Computational Fluids Engineering, 15:4 9-16.
  2. Ryu, C. K., Shim, K. B., Choi, S. M., 1999, Flow Optimization Study of Selective Catalytic Reactor by Reduced Scale Model Experiments and Numerical Simulations, The Korean Society of Mechanical Engineers-B, 23:4 548-555.
  3. Seo, J. W., Lee, K. I., Oh, J. T., Choi, Y. H., Lee, J. H., Park, J. I, 2008, The Study on the Effects of Mixer Configurations on Fluid Mixing Characteristics in SCR Systems, The Korean Society of Mechanical Engineers-B, 16:6 192-199.
  4. Weltens, H., Bressler, H., Terres, F., Neumaier, H., Rammoser, D., 1993, Optimisation of Catalytic Converter Gas Flow Distribution by CFD Prediction, Society of Automobile Engineers, 0780 930780.
  5. Launder, B. E., Spalding, D. B., 1974, The Numerical Computation of Turbulent Flows, Computer Methods in Applied Mechanics and Engineering, 3:2 269-289. https://doi.org/10.1016/0045-7825(74)90029-2
  6. Tsinoglou, D. N., Koltsakis, G. C., Missirlis, D. K., Yakinthos, K. J., 2004, Transient Modelling of Flow Distribution in Automotive Catalytic Converters, Applied Mathematical Modelling, 28:9 775-794. https://doi.org/10.1016/j.apm.2003.12.006
  7. Lee, C. S., Jeong, I. G., Jeong, S. S., Park, C. D., Jeong, G. R., 2012, A Numerical Analysis on Flow Uniformity of SCR Reactor for 5,000 PS Grade Marine Engine, KSMPE, 11:6 28-35.

Cited by

  1. A Study on Numerical Analysis of Flow Uniformity According to Length and Degree Change of Mixed-Evaporator in 500 PS SCR Reactor vol.28, pp.8, 2016, https://doi.org/10.6110/KJACR.2016.28.8.337