REGIMES FOR FLOW-BLURRING AND FLOW-FOCUSING ATOMIZATION OF NEWTONIAN AND NON-NEWTONIAN FLUIDS
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Published:2023
Issue:5
Volume:33
Page:1-19
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ISSN:1044-5110
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Container-title:Atomization and Sprays
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language:en
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Short-container-title:Atomiz Spr
Author:
Jaber Othman J.,Dai Shaocong,Kourmatzis Agisilaos,Masri Assaad R.
Abstract
This paper presents a detailed mapping of flow-blurring (FB) and flow-focusing (FF) atomization as relevant to Newtonian fluids and non-Newtonian fluids. Two Newtonian fluids with different viscosities are tested, along with a non-Newtonian fluid, where the properties are similar to those of human saliva. Images featuring the fragmentation characteristics are presented with regime diagrams describing the transition from flow-focusing to flow-blurring. Flow-blurring refers to a mode of atomization where the fluid is partially aerated with gas bubbles to assist breakup, while flow-focusing has similarities to air-blast atomization (AB). The regime transition map developed for FF/FB atomizers reveals the parameters, which define transitions from the flow-focusing to the flow-blurring regime. Along with the transition identification, the breakup regime map also details the fragment morphology of the atomizing liquid stream as a function of the governing dimensionless groups.
Subject
General Chemical Engineering
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