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Title: Investigation on average void fraction for air/non-Newtonian power-law fluids two-phase flow in downward inclined pipes

The present work has been carried out to investigate on the average void fraction of gas/non-Newtonian fluids flow in downward inclined pipes. The influences of pipe inclination angle on the average void fraction were studied experimentally. A simple correlation, which incorporated the method of Vlachos et al. for gas/Newtonain fluid horizontal flow, the correction factor of Farooqi and Richardson and the pipe inclination angle, was proposed to predict the average void fraction of gas/non-Newtonian power-law stratified flow in downward inclined pipes. The correlation was based on 470 data points covering a wide range of flow rates for different systems at diverse angles. A good agreement was obtained between theory and data and the fitting results could describe the majority of the experimental data within {+-}20%. (author)
Authors:
 [1]
  1. LHO, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
21350405
Resource Type:
Journal Article
Resource Relation:
Journal Name: Experimental Thermal and Fluid Science; Journal Volume: 34; Journal Issue: 8; Other Information: Elsevier Ltd. All rights reserved
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; AIR; PIPES; TWO-PHASE FLOW; VOID FRACTION; LIQUID FLOW; CORRELATIONS; ORIENTATION; FLOW RATE; CORRECTIONS; COVERINGS Non-Newtonian fluids