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http://dx.doi.org/10.3795/KSME-B.2009.33.7.541

A Numerical Study of the Turbulent Flow Characteristics in the Inlet Transition Square Duct Based on Roof Configuration  

Yoo, Geun-Jong (창원대학교 기계설계공학과)
Choi, Hoon-Ki (창원대학교 기계설계공학과)
Choi, Kee-Lim (창원대학교 대학원 기계설계공학과)
Shin, Byeong-Ju (창원대학교 대학원 기계설계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.33, no.7, 2009 , pp. 541-551 More about this Journal
Abstract
Configuration of the inlet transition square duct (hereinafter referred to as "transition duct") for heat recovery steam generator (hereinafter referred to as "HRSG") in combined cycle power plant is limited by the construction type of HRSG and plant site condition. The main purpose of the present study is to analyze the effect of a variation in turbulent flow pattern by roof slop angle change of transition duct for horizontal HRSG, which is influencing heat flux in heat transfer structure to the finned tube bank. In this study, a computational fluid dynamics(CFD) is applied to predict turbulent flow pattern and comparisons are made to 1/12th scale cold model test data for verification. Re-normalization group theory (RNG) based k-$\epsilon$ turbulent model, which improves the accuracy for rapidly strained flow and swirling flow in comparison with standard k-$\epsilon$ model, is used for the results cited in this study. To reduce the amount of computer resources required for modeling the finned tube bank, a porous media model is used.
Keywords
Transition Duct; Heat Recovery Steam Generator; Combined Cycle Popwer Plant; Turbulent Flow Characteristics; Roof Slope Angle; HP Superheater;
Citations & Related Records

Times Cited By SCOPUS : 1
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