Single-Phase and Two-Phase Pressure Drops Across Sudden Contraction in Horizontal Rectangular Minichannel
Single-Phase and Two-Phase Pressure Drops Across Sudden Contraction in Horizontal Rectangular Minichannel
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DOI：
10.15224/978-1-63248-059-0-65
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发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
Agus Santoso;A. Kawahara;Daiki Goto;M. Sadatomi;T. Takehira
中科院分区：
文献类型：
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作者：
Agus Santoso;A. Kawahara;Daiki Goto;M. Sadatomi;T. Takehira
本文对水平矩形微通道内单相流和两相流突然收缩时液体物性对压降的影响进行了实验研究。为了了解其效果，选择水和粘弹性液体，即0.1wt%聚丙烯酰胺（PAM）水溶液作为工作液体，空气作为工作气体。在室温条件下，对水平矩形微通道内突然收缩的液体单相流和气液两相流进行了实验研究。窄流道的高度（H）、宽度（W）和水力直径（DH）的流道横截面尺寸为2.79 mm、3.09 mm和2.94 mm，而宽流道的高度（H）、宽度（W）和水力直径（DH）的流道横截面尺寸为2.95 mm，用校准的压力传感器测量收缩上游和下游的局部压力，以确定收缩的压力。由于收缩引起的压力下降。作为一种分析，在收缩的压力降的数据进行了比较，在文献中的几个关联。本文报道了这种实验和分析的结果。
This paper presents experimental investigations on the effects of liquid properties on pressure drop for both single-phase and two-phase flows through sudden contraction in horizontal rectangular minichannel. In order to know the effects, water and viscoelastic liquid, namely 0.1 wt% polyacrylamide (PAM) aqueous solution are selected as the working liquid, while air as the working gas. Liquid single-phase and air-liquid two- phase flow experiments were conducted at room temperature using a horizontal rectangular mini-channel with a sudden contraction. The cross-sectional dimensions of the channel with the height (H), the width (W) and the hydraulic diameter (DH) for the narrow channel are 2.79 mm, 3.09 mm and 2.94 mm, while those for the wide channel are 2.95 mm, 5.98 mm and 3.95 mm. The local pressure upstream and downstream from the contraction were measured with calibrated pressure transducer to determine the pressure drop due to the contraction. As an analysis, the resulting data on the pressure drop at the contraction were compared with several correlations in literature. Results of such experiment and analysis are reported in the present paper.