@article {Song:October 2003:0160-564X:935, author = "Song X.", author = "Wood H.G.", author = "Day S.W.", author = "Olsen D.B.", title = "Studies of Turbulence Models in a Computational Fluid Dynamics Model of a Blood Pump", journal = "Artificial Organs", volume = "27", year = "October 2003", abstract = ":

Computational fluid dynamics (CFD) is used widely in design of rotary blood pumps. The choice of turbulence model is not obvious and plays an important role on the accuracy of CFD predictions. TASCflow (ANSYS Inc., Canonsburg, PA, U.S.A.) has been used to perform CFD simulations of blood flow in a centrifugal left ventricular assist device; a k-epsiv model with near-wall functions was used in the initial numerical calculation. To improve the simulation, local grids with special distribution to ensure the k-ohgr model were used. Iterations have been performed to optimize the grid distribution and turbulence modeling and to predict flow performance more accurately comparing to experimental data. A comparison of k-ohgr model and experimental measurements of the flow field obtained by particle image velocimetry shows better agreement than k-epsiv model does, especially in the near-wall regions.", pages = "935-937(3)", url = "http://www.ingentaconnect.com/content/bsc/aor/2003/00000027/00000010/art00014" doi = "doi:10.1046/j.1525-1594.2003.00025.x" }