论文标题
与弹性壁的脉冲通道流共振
Resonances in pulsatile channel flow with an elastic wall
论文作者
论文摘要
液体与弹性固体之间的相互作用无处不在，从航空和土木工程到生理流动范围。在这里，我们研究了通过二维八度八度电阻的脉冲流，作为弹性血管中不稳定流动的简单模型。我们从数值上求解了控制流量和大置位弹性的方程，并表明该系统作为具有非惯性阻尼的强制谐波振荡器的响应。我们得出了振荡壁变形的幅度的分析预测，从而导致共振发生或消失的条件。
Interactions between fluids and elastic solids are ubiquitous in application ranging from aeronautical and civil engineering to physiological flows. Here we study the pulsatile flow through a two-dimensional Starling resistor as a simple model for unsteady flow in elastic vessels. We numerically solve the equations governing the flow and the large-displacement elasticity and show that the system responds as a forced harmonic oscillator with non-conventional damping. We derive an analytical prediction for the amplitude of the oscillatory wall deformation, and thus the conditions under which resonances occur or vanish.
