General Information
    • ISSN: 1793-821X (Print)
    • Abbreviated Title: J. Clean Energy Technol.
    • Frequency: Quarterly
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing: CNKIElectronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest.
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Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all the reviewers and editors, who have been working
very hard to ensure the quality of the journal. It's my honor to work with such a wonderful team.

JOCET 2015 Vol.3(1): 39-42 ISSN: 1793-821X
DOI: 10.7763/JOCET.2015.V3.165

Numerical Analysis of Urea Decomposition with Static Mixers in Marine SCR System

Cheolyong Choi, Yonmo Sung, Gyung Min Choi, and Duck Jool Kim
Abstract—A numerical simulation for urea decomposition into ammonia with static mixers was performed for marine selective catalytic reduction. Three types of mixer were considered to improve urea into ammonia conversion rate. The effect of each mixer such as pressure drop, particle residence time, and uniform distribution of urea water solution was investigated using three dimensional CFD code. Using mixer regardless of a type was improved urea decomposition. Engine performance could be affected by high pressure drop caused by mixer. Therefore, the proper mixer should be chosen in permissible level of pressure drop as well as ammonia conversion rate.

Index Terms—Selective catalytic reduction (SCR), static mixer, urea decomposition, urea water solution (UWS).

The authors are with the School of Mechanical Engineering, Pusan National University, Busan, Korea (e-mail:;;;


Cite:Cheolyong Choi, Yonmo Sung, Gyung Min Choi, and Duck Jool Kim, "Numerical Analysis of Urea Decomposition with Static Mixers in Marine SCR System," Journal of Clean Energy Technologies vol. 3, no. 1, pp. 39-42, 2015.

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