日本機械学会論文集 C編
Online ISSN : 1884-8354
Print ISSN : 0387-5024
蒸気発生器U字型伝熱管群の流力弾性振動評価手法の高度化研究(第3報,評価手法の策定)(機械力学,計測,自動制御)
中村 友道鈴田 忠彦友松 健一高井 睦夫岩瀬 敏彦宇和川 誠一班目 春樹岩壺 卓三齋藤 孝基
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2002 年 68 巻 668 号 p. 1073-1079

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This report (3rd Report) shows an advanced estimation method of the fluidelastic instability for the U-bend tube bundle of steam generators in Japan, which is subjected to steam-water two-phase flow. The criterion is based on the usual Connors' formula, where many parameters are estimated with newly measured data and with an advanced thermo-hydraulic code (shown in 1st Report). Some measured data, which are required for the criteria, are shown here, added to the critical factor (shown in 2nd Report). Safety margin is introduced for the design to avoid the severe damage, compared with measured U-bend instability and an example of a practical event.

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