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  • 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.
  • 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. (en)
Title
  • Identification of relaxation parameter of a physical model of vein from fluid transient experimen
  • Identification of relaxation parameter of a physical model of vein from fluid transient experimen (en)
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  • Identification of relaxation parameter of a physical model of vein from fluid transient experimen
  • Identification of relaxation parameter of a physical model of vein from fluid transient experimen (en)
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  • RIV/68407700:21220/14:00223911!RIV15-MSM-21220___
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  • S
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  • 20309
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  • RIV/68407700:21220/14:00223911
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  • maximum dissipation thermodynamics; viscoelasticity; pulsatile flow (en)
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  • [562B9E888164]
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  • Kutná Hora
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  • Les Ulis
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  • Proceedings of the International Conference Experimental Fluid Mechanics 2013
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  • Chlup, Hynek
  • Hromádka, David
  • Žitný, Rudolf
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http://linked.open...ain/vavai/riv/wos
  • 000343672100042
http://linked.open.../riv/zahajeniAkce
issn
  • 2101-6275
number of pages
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  • 10.1051/epjconf/20146702039
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  • EDP Sciences
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  • 9788026053750
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  • 21220
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