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http://dx.doi.org/10.3795/KSME-B.2011.35.9.923

Numerical Study on Heat Transfer Characteristics of Turbulent Flow in Transition Duct  

Yoo, Geun-Jong (Dept. of Mechanical Design & Manufacturing Engineering, Changwon Nat'l Univ.)
Choi, Hoon-Ki (Dept. of Mechanical Design & Manufacturing Engineering, Changwon Nat'l Univ.)
Choi, Kee-Lim (Dept. of Mechanical Design & Manufacturing Engineering, Changwon Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.9, 2011 , pp. 923-932 More about this Journal
Abstract
Because of the instability of a flow pattern in the inlet transition square duct (hereinafter referred to as "transition duct") of a heat recovery steam generator (hereinafter referred to as "HRSG") in a combined cycle power plant, the Reynolds number in the first row of a tube bank is differs sharply from that in the sectional area of the transition duct. This causes differences in the heat flux in each tube in the tube bank. The computational fluid dynamics (CFD) predictions provide three-dimensional results for velocity, temperature, and other flow parameters over the entire domain of the duct and HRSG. A renormalization group theory (RNG) based k-${\epsilon}$�� turbulent model is used for obtaining the results cited in this study. A porous media option is used for modeling the tube banks and the number of transfer units method is used for determining the heat transfer characteristics. This study describes a comparison between the numerical simulation results and actual design output.
Keywords
Combined Cycle Power Plant; Superheater Tube; Heat Recovery Steam Generator; Swirling Flow; Turbulent Flow; Transition Duct; Tube Bank;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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