Simulation of collagen solution flow in rectangular capillary
1 Institute of Hydrodynamics, AS CR, v.v.i., Pod Patankou 30/5, 166 12 Prague 6, Czech Republic
2 Department of Process Engineering, Faculty of Mechanical Enginnering, Czech Technical University in Prague, Technicka 4, 166 07 Prague 6, Czech Republic
3 Food Research Institute Prague, Radilova 7, 102 00 Prague 10, Czech Republic
a e-mail: email@example.com
Published online: 12 May 2017
The viscoelastic properties of foods and polymers can be evaluated from flow of the material in capillary with specified dimension and shape. The extrusion rheometer equipped by capillary with rectangular cross-section was used for determination of the rheological behaviour of water collagen solution. The measurements of the axial profiles in longitudinal direction of the total stresses at capillary wall were performed for various shear rates. The linear viscoelastic model of Oldroyd B type: White-Metzner model was used for simulation of fluid flow in OpenFOAM software package. The simulations describe the effect of relaxation time on wall total stress in convergent-divergent capillary.
© The Authors, published by EDP Sciences, 2017
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