Flow Pattern and Heat Transfer Behavior of Boiling Two-Phase Flow in Inclined Pipes  

作　　者：Liu Dezhang Ouyang Ning Nanjing Aeronautical Institute, 210016 Nanjing, China 

出　　处：《Journal of Thermal Science》1992年第3期196-202,共7页热科学学报（英文版）

摘　　要：Movable Electrical Conducting Probe (MECP), a kind of simple and reliable measuring transducer, used for predicting full-flow-path flow pattern in a boiling vapor/liquid two-phase flow is introduced in this paper. When the test pipe is set at different inclination angles, several kinds of flow patterns, such as bubble, slug, churn, intermittent, and annular flows, may be observed in accordance with the locations of MECP. By means of flow pattern analysis, flow field numerical calculations have been carried out, and heat transfer coefficient correlations along full-flow-path derived. The results show that heat transfer performance of boiling two-phase flow could be significantly augmented as expected in some flow pattern zones. The results of the investigation, measuring techniques and conclusions contained in this paper would be a useful reference in foundational research for prediction of flow pattern and heat transfer behavior in boiling two-phase flow, as well as for turbine vane liquid-cooling design.

关 键 词：liquid/vapor two phase flow inclined pipes flow patterns heat transfer coefficient. 

分 类 号：O359.1[理学—流体力学] TK124[理学—力学]