Potential possibilities of a new method for yield stress determination
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2016-01-01
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Abstract
One-D solution for the hydrodynamic characteristics of waveless film flow of an Ellis liquid on a horizontal rotating disk is obtained and considered for determination of the liquid yield stress. Several versions of the method based on the film thickness of the remaining liquid on the disk at a zero feed flow rate are proposed. Verification that such layer remains is provided. The limitations of the method advanced which refer to wave formation, film breakup, liquid adhesion and disk wetting are discussed in view of its application in rheometry.