Investigation of Dynamic Modelling of Coronary Arteries by Using Simulation and Bond Graph Method

Coronary artery diseases are nowadays recognized as one of the principal causes of death worldwide. The coronary circulation system plays a critical role in maintaining myocardial function by ensuring a continuous and regulated supply of oxygenated blood to the heart tissue. Precise modeling of coronary blood flow is essential for understanding cardiovascular dynamics, aiding in clinical diagnosis, and improving therapeutic strategies. The main scope of this research is to propose an efficient dynamic model to simulate the Coronary Arteries performance employing bond graph approach and simulation. For this purpose, complete constitutive elements of the system under investigation are considered. The complete model of the system was developed appending bond graph model of the subsystems together utilizing appropriate junctions. ۴۰ governing equations were formulated to describe the dynamic relationships between pressure, flow, and compliance across the network. These equations were directly derived from the bond graph structure, ensuring physical consistency and system-level integration. A computer model was developed employing the block oriented structure of Simulink in MATLAB software for simulation studies. The very good agreements between the simulation and experimental results of the studied system, illustrates the validity and accuracy of the proposed bond graph model in this investigation. As a result, the offered approach presents a comprehensive and efficient model to get clear insight into the dynamic behavior of the Coronary Arteries and provide helpful information designing such systems. This model provides a scalable and modular framework for future expansion, including pathological condition modelling such as arterial stenosis or blockage.

کلیدواژه ها:

Coronary Arteries ، Dynamic Modelling ، Bond Graph ، Simulation ، MATLAB Software