INTRODUCTION Among cardiovascular diseases, arterials stenosis is recognized more commonly than the others. Hemodynamic characteristics of blood play a key role in the incidence of stenosis. This paper numerically investigates the pulsatile blood flow in a coronary bifurcation with a non-planar branch. To create a more realistic analysis, the wall is assumed to be compliant. Furthermore, the fl...

This paper extends the resolvent formulation proposed by McKeon & Sharma (J. Fluid Mech., vol. 658, 2010, pp. 336–382) to consider turbulence–compliant wall interactions. Under this formulation, the turbulent velocity field is expressed as a linear superposition of propagating modes, identified via a gain-based decomposition of the Navier–Stokes equations. Compliant surfaces, modelled as a comp...

The absolute instability of jets and wake flows have often been studied when either unconfined in the flow normal direction, or confined by solid, impermeable walls. In this study, we confine compliant, flexible, walls that are only able to move direction. By using a local analysis, find wall compliance can significant effect on existing instabilities even induce new absolutely unstable modes.

background: the interaction between the blood and the vessel wall is of great clinical interest in studying cardiovascular diseases, the major causes of death in developed countries. objective: to understand the effects of incorporating fluid-structure interaction into the simulation of blood flow through an anatomically realistic model of abdominal aorta and renal arteries reconstructed from c...

Although the success of compliant walls in mimicking dolphin skin is well known, the drag-reducing properties of a dolphin's skin are still unclear. Moreover, little is known about the relation between the 3D structure of the skin and the local flow conditions. To study the role of a dolphin's skin in reducing the drag the skin morphology parameters were compared with the parameters of an aniso...

1Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow, Russia; Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow Region, Russia 2Department of Mathematics, University of Houston, Houston, Texas 77204-3008, USA 3Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow Region, Russia; Institute of Numerical Mathem...

By revisiting the linear dynamics of plane channel flow between compliant walls it is shown that instability mainly dominated by perturbations varicose symmetry. The prevailing modes are traveling-wave-flutter type and governed reduced velocity, a nondimensional control parameter measuring response flexible wall to hydrodynamic loading. Analysis energy transfer mechanisms reveals stabilizing ef...

In this paper, we analyze the thermal radiation and chemical reaction impacts on MHD peristaltic motion of the Eyring-Powell fluid through a porous medium in a channel with compliant walls under slip conditions for velocity, temperature, and concentration. Assumptions of a long wave length and low Reynolds number are considered. The modeled equations are computed by using the perturbation metho...