Simulation of a Hydraulic System Duplicating the Human Circulatory System

Mock circulatory system has been an essential tool for ventricular assist device VAD developing. It can replicate the characteristics of the natural human circulatory system, such as the flow and pressure of the aortic root. In this study a new method to establish a mock circulatory system using basic hydraulic elements is proposed. The system consists of a self-designed centrifugal pump, one electromagnetic switch valve, three vessels with a certain volume and a throttling valve. All of the hydraulic elements are modeled by means of fluid dynamics and ideal gas law. Once combining the components to form a system, numerical calculation is employed to get the results. Then the results are compared to the data obtained from the human circulatory system to validate the effectiveness of the new mock circulatory system. It can be found that this system is simple but valuable for VAD evaluating.