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Atomization and Sprays

Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

Institutional price:	$787.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

1992, Volume2

76 pages

Issue price - $75.00

ATOMIZATION OF HIGHLY VISCOUS LIQUIDS BY A SPINNING DISK

Yoshiro Kitamura
Department of Applied Chemistry, Okayama University, Okayama, Japan

Teruo Takahashi
Department of Applied Chemistry, Okayama University, Okayama, Japan

ABSTRACT

The drop formation of highly viscous liquids by spinning disks was studied experimentally. Aqueous starch syrup solutions of viscosities ranging from 0.25 to 0.91 Pa s and aqueous carboxymethyl cellulose sodium (CMC) solutions were used. Photographic observation indicated that the drop formation of highly viscous liquids resembles that of low-viscosity liquids, although the range in which ligaments form stably is rather narrow. The drop sizes of highly viscous Newtonian liquids in the ligament formation mode agree with the prediction based on the stability theory of a liquid jet, provided the ligament number is estimated correctly. However, the highly viscous liquids often hinder prediction of the correct number of ligaments. For the non-Newtonian CMC solutions, the drop sizes are larger than that predicted by more than 40%.