Single-Phase and Two-Phase Pressure Drops Across Sudden Contraction in Horizontal Rectangular Minichannel

AGUS, SANTOSO and AKIMARO, KAWAHARA and DAIKI, GOTO and MICHIO, SADATOMI and TOMOAKI, TAKEHIRA (2015) Single-Phase and Two-Phase Pressure Drops Across Sudden Contraction in Horizontal Rectangular Minichannel. In: Third International Conference on Advances in Mechanical, Aeronautical and Production Techniques - MAPT 2015, 11-12 APRIL 2015, Kuala Lumpur, Malaysia.

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Abstract

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 twophase 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.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: two-phase flow, pressure drops, rectangular minichannel, sudden contraction
Depositing User: Mr. John Steve
Date Deposited: 04 May 2019 12:25
Last Modified: 04 May 2019 12:25
URI: http://publications.theired.org/id/eprint/1908

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