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우대천(D.C. Woo),신보창(B.C. Shin),지정선(J.S. Jee),박원규(W.G. Park) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.1
The primary object of this study is to evaluate the sub-models of wall boiling model and inter-phase momentum transfer models to flow boiling with downward heated wall in an inclined channel. Based on eulerian two-fluid method, kurul and podowski’s heat partitioning method is applied to numerical simulation with star-ccm+ v.11.06.010-R8 commercial code. The inlet mass flux is 200 ㎏/㎡·s and heat flux is 100 kw/㎡. Based on the experimental wall superheat result, nucleate site number density, bubble departure diameter, interaction length scale(bubble size), area coefficient, drag force and non-drag force are compared with each other. After then, summarized all models are applied to code and the numerical results show a good agreement with experimental results.
STAR-CCM+ 상용 코드를 활용한 2×2 봉다발 내 부수로 유동 해석
신보창(B.C. Shin),우대천(D.C. Woo),지정선(J.S. Jee),박원규(W.G. Park) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.1
The primary object of this study is to evaluate the availability of star-ccm+ v.11.06 commercial code to single-phase turbulent flow in a 2×2 rod bundle subchannel based on the experimental results from Hosokawa et al.. The inlet bulk velocity varies from 1.0 ㎧ to 2.0 ㎧ which is corresponding to the fully developed turbulent flow’s Reynolds number from 12,500 to 25,000. The room temperature condition and fully developed inlet velocity is applied to numerical initial and boundary conditions. The velocity distribution at the close to exit plane is compared with experiment and star-ccm+ numerical results. And turbulent properties are compared too. The numerical results of star-ccm+ show a good agreement with the experiment.