On the Similarity of Heat and Momentum Transfer at the Side Wall of a Fully Turbulent Agitated Vessel without Baffles

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  • 邪魔板なし乱流撹拌槽の槽側壁での熱移動と運動量移動の相似性の検証
  • ジャマイタ ナシ ランリュウ カクハンソウ ノ ソウ ソクヘキ デノ ネツ イドウ ト ウンドウリョウ イドウ ノ ソウジセイ ノ ケンショウ

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Abstract

From the analysis of the heat transfer coefficient measured by many investigators, the similarity of heat and momentum transfer at the side wall of a fully turbulent agitated vessel without baffles was expressed by jH(md/βD)≒f/2 using the j-factor jH for heat transfer and the friction factor f for momentum transfer, in which the correlation parameter m was defined as m=2.5(rc/rd)2 using the radius of cylindrically rotating zone rc and the impeller radius rd.<br>The correlation of the heat transfer coefficient in an agitated vessel with the power consumption per unit volume Pv proposed by Calderbank and MooYoung (1961) was confirmed to satisfy well the similarity between heat and momentum transfer at the side wall of the vessel for a wide range of impeller dimensions.

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