Investigation of flow boiling in horizontal tubes: Part I??????A new diabatic two-phase flow pattern map

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• 作者：Wojtan ; Leszek ; Ursenbacher ; Thierry ; Thome ; John R.
• 关键词：Two-phase flow ; Flow boiling ; Flow pattern maps ; Flow regimes ; Dryout
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2005
• 出版时间：July, 2005
• 年：2005
• 卷：48
• 期：14
• 页码：2955-2969
• 全文大小：1.27 M

文摘

Several important modifications to the flow pattern map of Kattan–Thome–Favrat [J. Heat Transfer 120(1) (1998) 140–147] made, resulting in a significantly new version of the map. Based on the dynamic void fraction measurements described in [Int. J. Multiphase Flow 30 (2004) 125–137], the stratified–wavy region has been subdivided into three subzones: slug, slug/stratified–wavy and stratified–wavy. Furthermore, annular-to-dryout and dryout-to-mist flow transition curves have been added and integrated into the new flow pattern map, identified by distinct trends of the heat transfer coefficient as a function of vapor quality and by flow pattern observations to determine (and then predict) the inception and completion of dryout in horizontal tubes.