title: Fluid friction and wall viscosity of the 1D blood flow model.
abstract: We study the behavior of the pulse waves of water into a flexible tube for application to blood flow simulations. In pulse waves both fluid friction and wall viscosity are damping factors, and difficult to evaluate separately. In this paper, the coefficients of fluid friction and wall viscosity are estimated by fitting a nonlinear 1D flow model to experimental data. In the experimental setup, a distensible tube is connected to a piston pump at one end and closed at another end. The pressure and wall displacements are measured simultaneously. A good agreement between model predictions and experiments was achieved. For amplitude decrease, the effect of wall viscosity on the pulse wave has been shown as important as that of fluid viscosity.
authors: Sorbonne Universités, UPMC Univ Paris 6, UMR 7190, Institut Jean le Rond ∂׳Alembert, France; CNRS, UMR 7190, Institut Jean le Rond ∂׳Alembert, France.
authors: Xiao-Fei
authors: XF
authors: Wang
authors: Doshisha University, Department of Electrical Engineering, Laboratory of Ultrasonic Electronics, Japan.
authors: Shohei
authors: S
authors: Nishi
authors: Doshisha University, Department of Electrical Engineering, Laboratory of Ultrasonic Electronics, Japan.
authors: Mami
authors: M
authors: Matsukawa
authors: Sorbonne Universités, UPMC Univ Paris 6, UMR 7190, Institut Jean le Rond ∂׳Alembert, France; CNRS, UMR 7190, Institut Jean le Rond ∂׳Alembert, France.
authors: Arthur
authors: A
authors: Ghigo
authors: Sorbonne Universités, UPMC Univ Paris 6, UMR 7190, Institut Jean le Rond ∂׳Alembert, France; CNRS, UMR 7190, Institut Jean le Rond ∂׳Alembert, France.
authors: Pierre-Yves
authors: PY
authors: Lagrée
authors: Sorbonne Universités, UPMC Univ Paris 6, UMR 7190, Institut Jean le Rond ∂׳Alembert, France; CNRS, UMR 7190, Institut Jean le Rond ∂׳Alembert, France. Electronic address: jose.fullana@upmc.fr.
authors: Jose-Maria
authors: JM
authors: Fullana
mesh_terms: D001775:Blood Circulation; D004548:Elasticity; D017276:Friction; D006439:Hemodynamics; D057446:Hydrodynamics; D008954:Models, Biological; D017711:Nonlinear Dynamics; D011312:Pressure; D014783:Viscosity; D014867:Water
chemical_list: D014867:Water
keywords: Fluid friction; One-dimensional modeling; Pulse wave propagation; Viscoelasticity