摘要：Helically coiled tubes (HCTs) are widely used in industries owing to their compact structure and excellent heat and mass transfer efficiency. Due to the complexity of three-dimensional flow in HCTs, profound knowledge on the flow pattern characteristics is not well documented in existing literature. In this paper, we employ the wire-mesh sensor (WMS) and image tomography technique to measure a series of essential parameters (e.g. flow structures, phase fraction) to explore the flow pattern transition mechanism. According to our observation, bubbly, plug, slug, wavy and annular flow are recognized, and the mechanisms of flow pattern transitions are carefully discussed based on the analysis of the forces. In addition, the variation of void fraction in both temporal and spatial dimensions is discussed in detail. By introducing the drift flux analysis, new correlations of distribution parameter and drift velocity are proposed taking both HCTs structure and flow condition into account. ? 2022 Elsevier Ltd

ISSN号：0009-2509

卷、期、页：卷258

发表日期：2022-08-31

影响因子：4.311100

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Chemical Engineering Science

参与作者：刘莉,张嘉荣,顾汉洋

通讯作者：胡兵,戴军涛

第一作者：王科

论文类型：期刊论文

论文概要：刘莉,张嘉荣,胡兵,戴军涛,王科,顾汉洋，Flow pattern transition and void fraction prediction of gas–liquid flow in helically coiled tubes，Chemical Engineering Science，2022，卷258

论文题目：Flow pattern transition and void fraction prediction of gas–liquid flow in helically coiled tubes