
doi: 10.1137/030602605
We study the flow of an incompressible viscous fluid through a long tube with compliant walls. The flow is governed by a given time dependent pressure head difference. The Navier-Stokes equations for an incompressible viscous fluid are used to model the flow, and the Navier equations for a curved, linearly elastic membrane to model the wall. Employing the asymptotic techniques typically used in thin domains, we derive a set of effective equations that hold in medium-to-large compliant vessels for laminar flow regimes. The main novelty is the derivation of the effective equations that do not assume any {; ; ; \sl ad hoc}; ; ; closure, typically assumed in the derivation of one-dimensional models. Using ideas from homogenization theory for porous media flows, we obtain a closed system of effective equations that are of Biot type with memory. Memory accounts for the wave-like phenomena in the problem. Although the equations are two-dimensional, their simple structure enables a design of a numerical algorithm that has complexity of a one-dimensional solver. Our numerical simulations show that our model captures two-dimensional effects that cannot be captured using standard one-dimensional methods.
Physiological flow, fluid-structure interaction; incompressible Newton fluid; linear elastic membrane; effective model, Asymptotic methods, singular perturbations applied to problems in fluid mechanics, Applications of PDE in areas other than physics, PDEs in connection with fluid mechanics, Physiological flows, Biot flow with memory, Other free boundary flows; Hele-Shaw flows, Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.), Homogenization applied to problems in fluid mechanics, blood flow, Navier-Stokes equations
Physiological flow, fluid-structure interaction; incompressible Newton fluid; linear elastic membrane; effective model, Asymptotic methods, singular perturbations applied to problems in fluid mechanics, Applications of PDE in areas other than physics, PDEs in connection with fluid mechanics, Physiological flows, Biot flow with memory, Other free boundary flows; Hele-Shaw flows, Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.), Homogenization applied to problems in fluid mechanics, blood flow, Navier-Stokes equations
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 41 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
