| Issue |
EPJ Web of Conferences
Volume 67, 2014
EFM13 – Experimental Fluid Mechanics 2013
|
|
|---|---|---|
| Article Number | 02039 | |
| Number of page(s) | 6 | |
| Section | Contributions | |
| DOI | https://doi.org/10.1051/epjconf/20146702039 | |
| Published online | 25 March 2014 | |
https://doi.org/10.1051/epjconf/20146702039
Identification of relaxation parameter of a physical model of vein from fluid transient experiment
1 Czech Technical University in Prague, Faculty of Mechanical Engineering, Dept. of Mechanics, Biomechanics and Mechatronics, Technická 4, 166 07, Prague 6, Czech Republic
2 Czech Technical University in Prague, Faculty of Mechanical Engineering, Dept. of Process Engineering, Technická 4, 166 07, Prague 6, Czech Republic
a Corresponding author: david.hromadka@fs.cvut.cz
Published online: 25 March 2014
This paper presents a new fluid transient inflation experiment applied on a physical model of vein (short latex tube, 5mm diameter). Aim of experiments is assessment of wall viscous behaviour from attenuated pulsation of the tested sample. Experimental data obtained from dynamic test are compared with numerical simulation and a viscoelastic parameter of Haslach constitutive model is identified. It is verified that the viscoelasticity of wall has a greater impact to the damping of pulsation than the viscosity of water filling the sample and the attached capillary. Volume of sample depends on internal pressure measured by a pressure transducer. The maximum dissipation constitutive model of viscoelastic wall sample was employed for description of viscoelastic behaviour. Frequency of natural oscillation of pressure is determined by inertia of water column within the tested sample and attached capillary and by the tested specimen stiffness. The pressure pulsations are initiated by a sudden pressure drop at water surface.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.