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首页> 外文会议>International Symposium on Biomechanics in Sports vol.1; 20050822-27; Beijing(CN) >ON THE TWO - PHASE MODAL FOR A PULSATILE FLOW UNDER PERIODIC BODY ACCELERATION
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ON THE TWO - PHASE MODAL FOR A PULSATILE FLOW UNDER PERIODIC BODY ACCELERATION

机译：周期性加速时脉动的两相模态研究。

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摘要

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 fluid and particle phase, fluid acceleration, wall shear stress and instantaneous flow rate have been obtained. It as observed that the solution can be used for all feasible values of pulsatile and body acceleration (as, riding a tractor, operating a jack hammer andsudden and fast movements of body during gymnastics and sports activities). Using physiological data, the following qualitative and quantitative results have been obtained. 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 non-uniform. The effect of C on τ_b are again non- uniform.
机译：粒子-流体悬浮模型适用于在人体加速度影响下通过圆形管的脉动血流问题。借助于有限的汉克尔和拉普拉斯变换，获得了流体和颗粒相的轴向速度，流体加速度，壁切应力和瞬时流量的解析表达式。如所观察到的，该解决方案可用于脉搏和身体加速度的所有可行值（例如，乘坐拖拉机，操作千斤顶锤以及在体操和体育活动期间身体突然和快速运动）。使用生理数据，已获得以下定性和定量结果。随着管直径的增加，轴向速度和流体加速度的最大值从管的轴线移至管壁附近。 C对速度和加速度的影响是不均匀的。 C对τ_b的影响再次是不均匀的。

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