Experimental Investigation of Hysteresis in the Break-up of Liquid Curtains

Jeremy Marston, S T Thoroddsen, J Thompson, M G Blyth, D Henry, J Uddin

Research output: Contribution to journalArticle

Abstract

Findings from an experimental investigation of the break-up of liquid curtains are reported, with the overall aim of examining stability windows for multi layer liquid curtains composed of Newtonian fluids, where the properties of each layer can be kept constant or varied. For a single layer curtain it is known that the minimum flow rate required for initial stability can be violated by carefully reducing the flow rate below this point, which defines a hysteresis region. However, when two or three layers are used to form a composite curtain, the hysteresis window can be considerably reduced depending on the experimental procedure used. Extensive quantitative measurements of this hysteresis region are provided alongside an examination of the influence of physical properties such as viscosity and surface tension. The origins of curtain break-up for two different geometries are analysed; first where the curtain width remains constant, pinned by straight edge guides; and second where the
Original languageEnglish
Pages (from-to)248-263
JournalChemical Engineering Science
DOIs
StatePublished - Sep 27 2014

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