Influence of surface and edge profile of a spinning disc on its atomization characteristics in direct drop mode

Sahoo, K and Kumar, S (2024) Influence of surface and edge profile of a spinning disc on its atomization characteristics in direct drop mode. In: Chemical Engineering Science, 287 .

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Abstract

A spinning disc in direct drop regime is useful for contacting applications using one stream as drops. Here, we present a systematic probe into the effect of several edge and surface modification strategies on droplet characteristics. The characteristics of interest in this study are mean sizes of primary and secondary drops and their spread around respective mean values, and the evenness of circumferential distribution of drops. Exposure controlled static imaging is used to obtain blur free images in high resolution. Concentric grooving on surface offered stable film under limited flow condition, improves circumferential distribution, and significantly eliminates secondary drop formation. Serration at the disc edge controls the pitch of the drop detachment points, a feature naturally unique to only ligament mode. A new scale named maldistribution index (MI) is proposed to quantify circumferential distribution of released droplets. © 2024 Elsevier Ltd

Item Type:	Journal Article
Publication:	Chemical Engineering Science
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	01 Mar 2024 06:12
Last Modified:	01 Mar 2024 06:12
URI:	https://eprints.iisc.ac.in/id/eprint/83876

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