Title: Investigation the Effect of Velocity inlet and Carrying Fluid on the Flow inside Coronary Artery Show Chinese title

Title: 调查速度入口和携带流体对冠状动脉内流动的影响

Abstract: In this study OpenFOAM 4.4.2 was used to investigate flow inside the coronary artery of the heart. This step is the first step of our future project, which is to include conjugate heat transfer of the heart with three main coronary arteries. Three different velocities were used as inlet boundary conditions to see the effect of velocity increase on velocity, pressure, and wall shear of coronary artery. Also, three different fluids namely the University of Wisconsin solution, Gelatin, and blood was used to investigate the effect of different fluids on flow inside coronary artery. A code based on Reynolds Stress Navier Stokes (RANS) equations was written and was implemented with the real boundary condition that was calculated based on MRI images. In order to improve the accuracy of the current numerical scheme, hex dominant mesh is utilized. When the inlet velocity increases to 0.5 m/s, velocity, wall shear stress, and pressure increase at the narrower parts. Show Chinese abstract

Abstract: 在本研究中，使用了OpenFOAM 4.4.2来研究心脏冠状动脉内的流动情况。 这一步是我们在未来项目中的第一步，该项目旨在将心脏与三条主要冠状动脉的共轭传热包括在内。 三种不同的速度被用作入口边界条件，以观察速度增加对冠状动脉内速度、压力和壁面剪切力的影响。 此外，还使用了三种不同的流体，即威斯康星大学溶液、明胶和血液，以研究不同流体对冠状动脉内流动的影响。 编写了一个基于雷诺应力纳维-斯托克斯（RANS）方程的代码，并与基于MRI图像计算的实际边界条件相结合进行了实施。 为了提高当前数值方案的准确性，采用了以六面体为主的网格。 当入口速度增加到0.5 m/s时，狭窄部位的速度、壁面剪切应力和压力都会增加。