Flow of two liquids in sloping tubes: An analogue of high pressure steam and water

Gardner, G.C.; Kubie, J.

Abstract

A two-liquid system provides a better analogue for visualization purposes of high pressure boiler systems, where the density ratio is typically 4:1, than air and water at atmospheric pressure. A study is presented of the flow of isoamyl alcohol and water in sloping tubes and a stratified ribbon of alcohol is found, which is not seen with air and water, and this accounts for some corrosion failures in boilers. A critical condition is also encountered when the ribbon starts to be broken into drops and this quantitatively explains the occurrence of a minimum in the curve of burnout heat flux vs water velocity in steam-water systems from 11 to 18 MN/m2.

• Journal Article Type: Article
• Publication Date: 1976-02
• Deposit Date: Jul 26, 2016
• Journal: International Journal of Multiphase Flow
• Print ISSN: 0301-9322
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 4
• Pages: 435-451
• DOI: https://doi.org/10.1016/0301-9322%2876%2990024-0
• Keywords: Mechanical Engineering; General Physics and Astronomy; Fluid Flow and Transfer Processes
• Public URL: http://researchrepository.napier.ac.uk/Output/315572