抄録
Aortic valve is a membrane that plays an important role in controlling effective outputs of blood flow from the heart. Aortic stenosis is a disease that aortic valves barely open in systole, which cause considerable reduction of amount of blood flow. In this study, we performed numerical simulation of blood flows in a parallel-plate channel with a valve. Lattice Boltzmann method for 2-dimentional 9-velocity (D2Q9) model is used as a governing equation, and virtual-flux methods are applied for a thin valve. The channel length L is 10 times as long as the distance between the parallel-plate D with a grid number of 2002 x 202 on a regular Cartesian coordinate system. The valve moves due to hemodynamic and restitutive forces and separates pressure distribution clearly, which indicates the virtual-flux methods are successfully applied to express a thin valve in a flow.
