MHD blood flow and heat transfer through an inclined porous stenosed artery with variable viscosity

Numerical Modeling of Pulse Wave Propagation in a Stenosed Artery using Two-Way Coupled Fluid Structure Interaction (FSI)

As the heart beats, it creates fluctuation in blood pressure leading to a pulse wave that propagates by displacing the arterial wall. These waves travel through the arterial tree and carry information about the medium that they propagate through as well as information of the geometry of the arterial tree. Pulse wave velocity (PWV) can be used as a non-invasive diagnostic tool to study the functioning of cardiovascular system. A stenosis in an artery can dampen the pulse wave leading to changes in the propagating pulse. Hence, PWV analysis can be performed to detect a stenosed region in arterie…

MHD Pulsatile Two-Phase Blood Flow Through a Stenosed Artery with Heat and Mass Transfer

In this paper, effects of heat and mass transfer on two-phase pulsatile blood flow through a narrowed stenosed artery with radiation and the chemical reaction have been investigated. A vertical artery is assumed in which magnetic field is applied along the radial direction of the artery. The characteristics of blood in narrow arteries are analyzed by considering blood as Newtonian fluid in both core as well as in plasma regions. Exact solutions have been found for velocity, energy and concentration equations of the blood flow. To understand the behavior of blood flow, graphs of the velocity pr…

A coupled CFD-FEA study of the sound generated in a stenosed artery and transmitted through tissue layers

A new computational approach for simulating the blood flow induced sound generation and propagation in a stenosed artery with one-sided constriction was investigated. This computational hemoacoustic method is based on mapping the transient pressure (force) fluctuations on the vessel wall and solving for the structural vibrations in frequency domain. These vibrations were detected as sound on the epidermal surface. The current hydro vibroacoustic method employs a two step, one way coupled approach for the sound generation in the flow domain and its propagation through the tissue layers. The res…

可变粘度血液通过锥形重叠狭窄动脉的数学建模

Mathematical modelling of blood flow through a tapered overlapping stenosed artery with variable viscosity

本研究通过Frobenius方法求解控制方程，分析了外加磁场下可变粘度血液在锥形重叠狭窄动脉中的流动，揭示了血细胞比容、磁场和动脉形状对速度、压力梯度和壁面剪切应力的影响。

身体加速度影响下通过狭窄动脉的磁微极流体的脉动流与传热

Pulsatile flow and heat transfer of a magneto-micropolar fluid through a stenosed artery under the influence of body acceleration

采用有限差分法数值求解非稳态微极流体模型，研究外部身体加速度和磁场对狭窄动脉中血液脉动流及传热特性的影响，发现哈特曼数增加会提高传热率，而壁面剪切应力随哈特曼数增加而减小，随微旋转参数和狭窄高度增加而增大。

Towards a Mathematical Model for the Solidification and Rupture of Blood in Stenosed Arteries

In this paper, we present a mathematical and numerical model for blood solidification and its rupture in stenosed arteries. The interaction between the blood flow and an existing stenosis in the arterial wall is modeled as a three dimensional fluid-structure interaction problem. The blood is assumed to be a non-Newtonian incompressible fluid with a time-dependent viscosity that obeys a modified Carreau's model and the flow dynamics is described by the Navier-Stokes equations. Whereas, the arterial wall is considered a hyperelastic material whose displacement satisfies the quasi-static equilibr…