Influence Of Body Acceleration Research Articles

Influence of Body Acceleration and Slip Velocity on Fluid Flow in a Multi-Stenotic Artery

Blockage of arteries by the formation of plaques causing stenosis is a major health problem among human beings.In this study, a model is developed for the flow through a multi-stenosed elastic artery segment under the effect of body acceleration and slip velocity. Fluid is regarded as Non-Newtonian Bingham Plastic Fluid. The equations representing the model are solved analytically using Perturbation Method. Result is discussed for velocity, wall shear stress and volumetric flow rate by varying several parameters like pulse frequency, slip parameter and Womersley Frequency parameter graphically.

Computational Analysis of Blood Flow Through Stenosed Artery Under the Influence of Body Acceleration Using Shishkin Mesh

Computational Analysis of Blood Flow Through Stenosed Artery Under the Influence of Body Acceleration Using Shishkin Mesh

The Effect of Body Acceleration on Two Dimensional Flow of Casson Fluid through an Artery with Asymmetric Stenosis~!2009-07-01~!2009-10-30~!2010-05-17~!

Two dimensional flow of a non-Newtonian fluid through an asymmetric stenosed artery is analysed under the influence of body acceleration with an external magnetic field on the flow field. The Casson fluid model is considered to characterize the non-Newtonian behaviour of the blood. The flow is assumed to be unsteady, laminar, two-dimensional, asymmetric and of pulsatile nature. The artery wall has been treated as an elastic (moving wall) cylindrical tube. The un- steady flow mechanics is influenced by externally imposed periodic body acceleration. An explicit finite difference scheme is applied to obtain the flow field. The effect of body acceleration, magnetic field on the flowing blood is ana- lyzed and these results are presented through graphs for the axial and radial velocities, flow rate and wall shear stress.

Pulsatile flow of blood through a stenosed porous medium under periodic body acceleration

Pulsatile flow of blood through a stenosed porous medium has been studied under the influence of body acceleration. With the help of Laplace and finite Hankel transform, analytical expressions for axial velocity, fluid acceleration, flow rate and shear stress have been obtained. The effect of various parameters entering into the problem is discussed wiht the help of graphs.

Mhd flow of Blood Under Body Acceleration

Magnetohydrodynamic (MHD) flow of blood medium has been studied under the influence of body acceleration. With the help of Laplace and finite Hankel transforms, analytical expressions for axial velocity, fluid acceleration, flow rate and shear stress have been obtained

MHD flow of an elastico‐viscous fluid under periodic body acceleration

Magnetohydrodynamic (MHD) flow of blood has been studied under the influence of body acceleration. With the help of Laplace and finite Hankel transforms, an exact solution is obtained for the unsteady flow of blood as an electrical conducting, incompressible and elastico‐viscous fluid in the presence of a magnetic field acting along the radius of the pipe. Analytical expressions for axial velocity, fluid acceleration and flow rate has been obtained.

Pulsatile Flow of Blood through a Porous Mediumunder Periodic Body Acceleration

Pulsatile flow of blood through a porous medium has been studied studied underthe influence of body acceleration. With the help of Laplace and finite Hankeltransforms, analytic expressions for axial velocity, fluid acceleration, flow rate,and shear stress have been obtained.

Pulsatile flow of particle-fluid suspension model of blood under periodic body acceleration

A particle-fluid suspension model is applied to the problem of pulsatile blood flow through a circular tube under the influence of body acceleration. With the help of finite Hankel and Laplace transforms, analytic expressions for axial velocity for both fluid and particle phase, fluid acceleration, wall shear stress and instantaneous flow rate have been obtained. It is observed that the solutions can be used for all feasible values of pulsatile and body acceleration Reynolds numbers Rp and Rb. Using physiological data, the following qualitative and quantitative results have been obtained. The amplitude Qb of instantaneous flow rate due to body acceleration decreases as the tube radius decreases. The effect of the volume fraction of particle C on Qb is to increase it with increase of C in arteriole and to decrease Qb as C increases in coronary and femoral arteries. The maximum of the axial velocity and fluid acceleration shifts from the axis of the tube to the vicinity of the tube wall as the tube diameter increases. The effect of C on the velocity and acceleration are nonuniform. The wall shear amplitude \(\tau_b\) due to body acceleration increases as the tube diameter decreases from femoral to coronary and a further decrease in the tube diameter leads to a decrease in \(\tau_b\). The effects of C on \(\tau_b\) are again nonuniform.

Pulsatile flow of blood with periodic body acceleration

Pulsatile flow of blood through a rigid tube has been studied under the influence of body acceleration. With the help of finite Hankel and Laplace transforms, analytic expressions for axial velocity, fluid acceleration, wall shear and instantaneous volume flow rate have been obtained. It is of interest to note that these solutions can be used for all the feasible values of pulsatile and body acceleration Reynolds numbers Re p and Re b. This is in contrast with the existing results where different approximate solutions have to be used for different ranges of Re p and Re b. Using physiological data, the following qualitative and quantitative results have been obtained. The amplitude of the instantaneous volume flow rate, for flows with body acceleration, decreases shaprly as the tube radius decreases (from aorta to arteriole). This variation of amplitude is very slow for flows with no body acceleration. Another interesting result is the maximum of the axial velocity and fluid acceleration shifts from the tube axis to the vicinity of the tube wall as the tube diameter increases. The variation of the amplitude of wall shear with tube diameter (aorta to coronary) is less for flows with body acceleration than that of flows with no body acceleration. The phase lag between pressure gradient and flow rate changes sharply with tube diameter in narrow tubes, it varies asymptotically in wide tubes. The obtained results are qualitatively in good agreement with existing theoretical observations. Quantitatively, they differ from the other theoretical results (19 to 3000%). The difference in the results of the analyses decreases as the tube diameter increases (arteriole to aorta).