血管粘弹性对法推拿作用下血管切应力的影响
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国家自然科学基金项目 (30070951)


Effect of the Vasal Viscoelasticity on Wall Shear Stress under Rolling Massage
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    摘要:

    目的 研究血管粘弹性对脉动血流在扌衮法推拿作用下切应力的影响。方法 建立具有局部轴向运动狭窄的粘弹性血管中脉动血流模型。设血液为牛顿流体 ,血管壁为线性粘弹体。在扌衮法推拿作用下血管受水平外力作用形成轴向运动缓变狭窄 ,血流遵循线化Navier-stokes方程。结果 粘弹性血管在扌衮法作用下 ,距离血管入口z=31cm处的平均切应力、最大切应力和瞬时切应力以及最大狭窄下游血管段最大切应力随着血管粘性系数和手法频率的改变而有较大变化。结论 扌衮法推拿作用下粘弹性血管的血管切应力有显著变化 ,这与中医推拿的活血化淤相吻合。

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    Objective To investigate the effect of vasal viscoelasticity on wall shear stress of pulsatile flow under the influence of Rolling Massage. Methods A hemodynamic model for simulating arterial periodic oscillatory and axial blood flow with a local mild stenosis was formed. Blood was assumed to be Newtonian liquid and vessel wall was assumed to be with linear viscoelasticity. Under the influence of Rolling Massage, the effect of horizontal compression induced an axial vessel stenosis. Pattern of blood flow was found to fit with the linearized Navier-Stokes equation. Results The average shear stress, maximal shear stress and instantaneous shear stress, as well as the maximal wall shear stress behind the maximal stenostic vessel segment, which were measured at 31cm away from the entrance of the vessel, were dependent on both viscous coefficient of vessel and changes in manipulative frequency of Rolling Message. Conclusion The wall shear stress changed significantly under Rolling Massage an...更多d it agreed with the fact that Rolling Massage can remove blood stasis. 还原

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浏丹,许世雄,Y. T. Chew, H. T. Low,严隽陶,孙武权.血管粘弹性对法推拿作用下血管切应力的影响[J].医用生物力学,2004,19(3):129-135

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