動力・エネルギー技術の最前線講演論文集 : シンポジウム
Online ISSN : 2424-2950
2017.22
セッションID: A214
会議情報

高速炉直管型蒸気発生器解析評価システムの開発
(伝熱管プラグ条件下での構造健全性評価への適用検討)
*吉川 龍志今井 康友田中 正暁大島 宏之
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会議録・要旨集 フリー

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抄録

Accurate evaluation of three-dimensional temperature distribution is essentially required for the structural integrity analysis of large-sized straight tube steam generator (SG) of an advanced sodium-cooled fast reactor (SFR). Numerical simulation system TSG to analyze three-dimensional thermal-hydraulics in the straight tube SG has been developed. The three-dimensional simulation on sodium side by the CFD code FLUENT with porous body model was coupled with the multi-channel simulation on water/steam side. Fundamental validation of TSG code with the 1MWt straight tube SG test was performed. Temperature distribution of large-sized SG under the condition with plugged tubes was analyzed and the temperature deviation of heat transfer tubes was evaluated. Through the numerical simulation, local temperature increase near the plugged tubes was quantitatively evaluated, and the applicability of the simulation results to the structural integrity analysis of straight tube SG was indicated.

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