UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES

Rudolf Žitný, Aleš Landfeld, Jan Skočilas, Jaromír Štancl, Vlastimil Flegl, Milan Houška

Abstract


Unsteady flow of thixotropic liquid in pipes is solved by 1D and 2D numerical methods using the same constitutive equation — the only difference is in the radial diffusion of the structural parameter. Comparison shows that the neglected diffusion of structural parameter implicates a much stronger effect of thixotropy. The models are applied for analysis of the observed hysteresis of hydraulic characteristic of collagen.

Keywords


thixotropy, collagen, unsteady flow in pipe, hydraulic characteristics

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ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague