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2報,HFCF-123流体二相流によるU字型管群の流力弾性振動)(機械力学,計測,自動制御)

概要

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A partial but full-size mock-up test of practical steam-generator U-bend tubes in nuclear power plants has been carried out, where the test model has been set in a HFCF-123 fluid two-phase flow loop. U-bend tubes are supported with so-called "Anti-vibration Bars (AVB) ", which have two types of AVBs in Japan, 7-span type and 5-span one. Both types of AVBs have been examined and it is found that tubes with AVB supports shows no large amplitude vibration up to 150% flow rate to the practical condition. Basic data for the fluidelastic instability are obtained when some tubes have been set to be flexible at some contact points with AVBs.
社団法人日本機械学会の論文
2002-04-25