  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.
