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http://dx.doi.org/10.3795/KSME-B.2012.36.4.397

Numerical Study of the Flow Characteristics in a Diesel Exhaust System with a Vane-Type Static Mixer  

Kang, Kyoung-Nam (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Lee, Jee-Keun (School of Mechanical System Engineering, Chonbuk Nat'l Univ.)
Kim, Man-Young (Dept. of Aerospace Engineering, Chonbuk Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.4, 2012 , pp. 397-404 More about this Journal
Abstract
In this research, a numerical study was carried out on the mixing and flow characteristics of a vane-type static mixer for the reduction of $NO_x$ in the SCR systems from the diesel exhaust environments. The mixer was located at a distance of 57 times the pipe diameter away from the inlet. The analyses were performed by changing various parameters such as vane angles, blockage ratio, and location of the vane. Flow characteristics through the mixer were characterized by the uniformity index, swirl number, and pressure drop. The results show that uniformity index, pressure coefficient and swirl number are substantially influenced by the vane angle, blockage ratio and position of the vane of the mixer. In particular, the swirl number was increased when the vane was located near the pipe wall, or the vane angle was increased or scale was extended.
Keywords
Static Mixer; Uniformity Index(UI); Swirl Number(SN); Pressure Drop;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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