Identification of relaxation parameter of a physical model of vein from fluid transient experimen

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F14%3A00223911" target="_blank" >RIV/68407700:21220/14:00223911 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/20146702039" target="_blank" >http://dx.doi.org/10.1051/epjconf/20146702039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20146702039" target="_blank" >10.1051/epjconf/20146702039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Identification of relaxation parameter of a physical model of vein from fluid transient experimen

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Identification of relaxation parameter of a physical model of vein from fluid transient experimen

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

JR - Ostatní strojírenství

OECD FORD obor

—

Projekt

<a href="/cs/project/NT13302" target="_blank" >NT13302: Optimalizace fysikálních charakteristik cévních náhrad pro nízké průtoky</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the International Conference Experimental Fluid Mechanics 2013

ISBN

9788026053750

ISSN

2101-6275

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

EDP Sciences

Místo vydání

Les Ulis

Místo konání akce

Kutná Hora

Datum konání akce

19. 11. 2013

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000343672100042