1906 ショートエルボ配管内流動に対する乱流モデルの適用性検討(S21-2 噴流,後流及びはく離流れの流動解析と応用(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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A conceptual design study of a large-scale sodium-cooled fast reactor adopts a two-loop primary cooling system with large-diameter piping in order to reduce plant construction cost. In this design, one of issues is a flow-induced vibration behavior of the piping under a high Reynolds number of 10^7 order. To evaluate the piping integrity, it is necessary to obtain power spectrum densities of pressure fluctuations on the piping wall by a numerical unsteady flow simulation. In this study, the numerical simulation capability of Reynolds stress model and large-eddy simulation in the STAR-CD code has been investigated using the 1/3-scale hot-leg test data. Through the sensitivity analysis, the Reynolds stress model with appropriate analytical models has shown the best applicability to flow dynamics simulation in the short-elbow pipe.
一般社団法人日本機械学会の論文
2008-08-02