摘要：Many commonly used industrial fluids display non-Newtonian effects. Their rheology exerts a strong influence on flow structure, interface fluctuation, pressure drop, heat transfer and many other flow characteristics. Owing to the complexity of churn flow, knowledge of the flow characteristics with non-Newtonian fluids is not well documented in existing literature. In the present study, we employ the power-law model to describe the non-Newtonian fluid behavior and establish an analytical model to predict pressure gradient, void fraction and wave behavior in churn flow. One churn flow unit is carefully divided into two parts (the falling film region and the wave region) and analyzed separately. The results indicate that liquid viscosity significantly affects the variations of pressure gradient, void fraction, velocity profiles, film thickness and wave behavior. These findings will provide insight into the effect of viscosity on flow structures and benefit a better understanding of the non-Newtonian churn flow. (C) 2017 Elsevier Ltd. All rights reserved.

关键字：Churn flow Pressure drop Void fraction Non-Newtonian fluid Huge wave

ISSN号：0009-2509

卷、期、页：卷: 174 页: 82-92

发表日期：2017-12-31

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：CHEMICAL ENGINEERING SCIENCE

参与作者：Jiang, Fan,Bai, Bofeng,Wong, Teck Neng,Duan, Fei,Skote, Martin

第一作者：王科

论文类型：期刊论文

论文概要：王科,Jiang, Fan,Bai, Bofeng,Wong, Teck Neng,Duan, Fei,Skote, Martin，Pressure drop, void fraction and wave behavior in two-phase non-Newtonian churn flow，CHEMICAL ENGINEERING SCIENCE，2017，卷: 174 页: 82-92

论文题目：Pressure drop, void fraction and wave behavior in two-phase non-Newtonian churn flow