心臟與動脈是與眾不同的管流系統，壓力的週期輸出和彈性通道彼此配合，令許多描述它的物理或數學模型難以周全。本文透過實驗，以彈性和非彈性管互相對照，找出彈性對流率的影響，尤其是和共振的關連性；其次探討共振對系統是利是弊，發現心臟的工作環境其實非常巧妙，需要若干特定條件去配合它。經修正後終於成功模擬出利用共振達到幫浦最佳效能。

It is difficult to describe the cardiovascular system by using a single physical model. The left ventricle, valve and aorta may have some special interactions to increase efficiency in work. At first, a pulsatile pump and ultrasonic flow meter are used in this research to find out if a resonance occurs and how it influences the flow rate when an elastic tube is tested. Compare the results from three elastic tubes with the result from the non-elastic one. Then, does the integral flow volume also have a significant change around the resonant frequency? The elastic expansion and recoil should be measured to prove the assumption of resonance in latex tube. Finally, we adjust the apparatus to a heart-like mode and show its better performance around the resonant frequency.

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