Nihon Reoroji Gakkaishi
Online ISSN : 2186-4586
Print ISSN : 0387-1533
ISSN-L : 0387-1533
ORIGINAL ARTICLES
Pulsatile Flow of Thixotropic Fluids through a Partially-Constricted Tube
Siamak NezamidoostKayvan SadeghyVahid Askari
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JOURNAL FREE ACCESS

2013 Volume 41 Issue 2 Pages 45-52

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Abstract

Pulsatile flow of thixotropic fluids is investigated numerically in a partially-constricted tube assuming that the fluid obeys Moore's structural model as is constitutive equation. Assuming that the flow is laminar, incompressible, two-dimensional and axisymmetric, the equations of motion are simplified using lubrication theory. The simplified equations are then solved numerically using the finite difference method. A suitable coordinate transformation is used to immobilize the boundary of the tube. The effect of the structure breakdown/reformation parameters is investigated on the velocity field and wall shear stress distribution. The importance of the geometrical parameters of the constriction is also investigated on the flow characteristics.

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© 2013 The Society of Rheology, Japan
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