Pressure Wave Propagation in Liquid-Filled Tubes of Viscoelastic Material
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Дата
2006
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Анотація
The propagation of small-amplitude waves in a thick-walled long viscoelastic tube of variable
cross-section, filled with a viscous incompressible fluid, is considered with account for wave reflection
at the tube end in application to arterial pulse wave propagation. A solution is obtained in the form
of expansions in a small parameter. The effect of the coefficient of wave reflection at the tube end and the
wall material parameters on the fluid volume flow-rate and the tube wall displacement is investigated.
It is shown that the volume flow-rate phase spectrum characteristics depend only slightly on the wall
properties and can be used in clinical diagnostics for finding the reflection coefficient from pressure and
flow-rate records.
Опис
Ключові слова
pulse wave, wave reflection, viscoelastic tube
Бібліографічний опис
Fluid Dynamics, Vol. 41, No. 3