نتایج جستجو برای: oscillatory mhd blood flow

تعداد نتایج: 1111971  

2005
T. K. M. Nakamura M. Fujimoto

For understanding the structure of an MHD-scale Kelvin-Helmholtz Instability (KHI) in a non-linear stage, we have performed two-dimensional two-fluid simulations including finite electron inertial effects. In the twofluid system, magnetic reconnection occurs spontaneously because the ’frozen-in’ condition can be broken by the electron inertial effects. When an MHD-scale velocity shear exists, a...

Journal: :American journal of physiology. Heart and circulatory physiology 2010
Jaume Padilla Colin N Young Grant H Simmons Shekhar H Deo Sean C Newcomer John P Sullivan M Harold Laughlin Paul J Fadel

Escalating evidence indicates that disturbed flow patterns, characterized by the presence of retrograde and oscillatory shear stress, induce a proatherogenic endothelial cell phenotype; however, the mechanisms underlying oscillatory shear profiles in peripheral conduit arteries are not fully understood. We tested the hypothesis that acute elevations in muscle sympathetic nerve activity (MSNA) a...

Journal: :World Journal Of Advanced Research and Reviews 2022

Mathematical models were used in the investigation of mass transfer magnetic drug on lipoprotein during mhd blood an arterial channel. The non-linear partial differential equations changed into linear and then solved analytically to obtain exact solutions. numerical results obtained through plots showing parameter variations their effects focus study. With help graphs parameters such as Grashof...

Journal: :Journal of vascular research 2010
Tyler N Thacher Paolo Silacci Nikos Stergiopulos Rafaela F da Silva

Cyclic circumferential stretch and shear stress caused by pulsatile blood flow work in concert, yet are very different stimuli capable of independently mediating endothelial function by modulating eNOS expression, oxidative stress (via production of superoxide anion) and NO bioavailability. Porcine carotid arteries were perfused using an ex vivo arterial support system for 72 h. Groups we creat...

An attempt is made for the first time to solve the quadratic and cubic model of magneto hydrodynamic Poiseuille flow of Phan-Thein-Tanner (PTT). A series solution of magneto hydrodynamic (MHD) flow is developed by using homotopy perturbation method (HPM). The results are presented graphically and the effects of non-dimensional parameters on the flow field are analyzed. The results reveal many i...

Journal: :Mathematics 2021

In the presented analysis, a heterogeneous diffusion is introduced to magnetohydrodynamics (MHD) Darcy–Forchheimer flow, leading an extended model. The introduction of generalized was proposed by Cohen and Murray study energy gradients in spatial structures. addition, Peletier Troy, on one side, Rottschäfer Doelman, other have general (of fourth-order derivative) oscillatory patterns close crit...

Journal: :Bulletin of mathematical biology 1987
K Haldar

The oscillatory flow of blood through a stenosed artery is investigated in this paper in presence of magnetic field. The laminar, incompressible, fully developed, Newtonian flow of blood in an artery having mild stenosis is numerically studied under the action of transverse magnetic field and the numerical results are obtained for the oscillatory flow of blood using Shooting method. It is assum...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
Hiroshi Noguchi

The dynamics of red blood cells (RBCs) in oscillatory shear flow was studied using differential equations of three variables: a shape parameter, the inclination angle θ, and phase angle ϕ of the membrane rotation. In steady shear flow, three types of dynamics occur depending on the shear rate and viscosity ratio. (i) tank-treading (TT): ϕ rotates while the shape and θ oscillate. (ii) tumbling (...

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