论文标题
通过超声对比度微泡在两个平行壁之间的微流进行微流：剪切应力和流线
Microstreaming by ultrasound contrast microbubble between two parallel walls: shear stress and streamlines
论文作者
论文摘要
声学微流具有几种工业，治疗和生物医学应用 - 声清洁，微质子，微流体运输，溶血，超声层。数值研究了两个平行壁之间间隙中间的超声对比度微泡的振荡引起的声学微流。轴对称边界元素方法以及NYBORG理论用于研究流流。具有指数变化弹性的粘弹性模型用于模拟微气泡涂层。绘制了平面壁附近的微流流线，并绘制了诱导的剪切应力。结果表明，墙壁附近的环涡流产生。通过增加壁之间的间隙，涡旋环的径向尺寸增加，而微型剪切应力减少。
Acoustic microstreaming has several industrial, therapeutic, and biomedical applications - Acoustic cleaning, micromixing, microfluid transport, hemolysis, sonoporation. The acoustic microstreaming due to the oscillation of ultrasound contrast microbubbles in the middle of the gap between two parallel walls is studied numerically. Axisymmetric Boundary Element Method along with theory of Nyborg is applied to study the streaming flow. Viscoelastic model with exponentially varying elasticity is used to simulate microbubble coating. The microstreaming streamlines near the plane walls and the induced shear stress is plotted. The results show the generation of a ring vortex near the walls. By increasing the gap between the walls, the radial size of the vortex ring increases while the microstreaming shear stress decreases.
