摘要
本文研究了血浆层的存在对局部狭窄血管内脉动流动特性的影响。分析表明,在狭窄区域内,血浆层的存在明显地改变了血液流动的速度分布、纵向阻抗和压力梯度等特性,但几乎不改变纵向阻抗和压力梯度的幅角;而且这种影响与Womersley数、狭窄程度等因素有密切关系。分析血浆层影响下动脉狭窄流的特性,对于认识动脉粥样硬化的病理特性有重要意义。
This paper presents the influences of plasma layer on the oscillatory flow in arterial stenosis. The analysis demonstrates that the existence of the plasma layer may obviously change the characteristics of flow such as velocity-profiles, longitudinal impedance and pressure gradient, but hardly change she phase of longitudinal impedance and pressure gradient. Bssides, such influences vary with a and degree of stenosis. These analyses have special physiological significance in blood circulation systems.
出处
《应用数学和力学》
EI
CSCD
北大核心
1996年第12期1065-1072,共8页
Applied Mathematics and Mechanics
关键词
血浆层
血管
脉动流
血液流动
局部狭窄血管
stenosis, plasma layer, tubular pinch effect, oscillatory flow, longitudinal impedance, smooth effects
