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Keywords: flow separation
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Journal Articles
Article Type: Research-Article
J Biomech Eng. July 2014, 136(7): 071012.
Paper No: BIO-13-1526
Published Online: May 23, 2014
... of thrombus size within a backward-facing step (BFS) model is investigated, as this geometry can mimic the flow separation which has been found to contribute to thrombosis in cardiac devices. Magnetic resonance imaging (MRI) is used to quantify thrombus size and collect topographic data of thrombi formed...
Journal Articles
Article Type: Research Papers
J Biomech Eng. May 2011, 133(5): 051001.
Published Online: April 7, 2011
.... On the other hand, the RANS SST-Tran model also managed to capture important flow features (e.g., flow separation and reattachment) and velocity profiles similar to experimental data, giving credence that the comprehensive engineering correlations incorporated in the model could be applied to lower Reynolds...
Journal Articles
Article Type: Research Papers
J Biomech Eng. March 2010, 132(3): 031010.
Published Online: February 17, 2010
.... 0022-1120 , 86 ( 3 ), pp. 545 – 566 . 10.1017/S0022112078001275 blood vessels boundary layer turbulence flow separation flow visualisation fluid oscillations haemodynamics laminar flow laminar to turbulent transitions pulsatile flow time resolved DPIV arterial stenosis...
Journal Articles
Article Type: Research Papers
J Biomech Eng. June 2009, 131(6): 061006.
Published Online: April 27, 2009
... ( < 10 % ) of the axial wall shear stress (WSS) along the length of the stented model. The flow disturbance was characterized and quantified by the distributions of axial and transverse WSS, WSS gradients, and flow separation parameters. Normalized time-averaged effective WSS during the flow cycle...
Journal Articles
Article Type: Technical Briefs
J Biomech Eng. February 2008, 130(1): 014503.
Published Online: February 14, 2008
... ( 27 ) redefined the turbulent viscosity to account for this effect, deeming it necessary to improve predictions in adverse pressure gradient flows where flow separation occurs. The k ‐ ϵ and k ‐ ω are blended in such a way that the former is activated away from the wall and reduces...
Journal Articles
Article Type: Technical Papers
J Biomech Eng. June 2003, 125(3): 355–362.
Published Online: June 10, 2003
... on the walls is accounted for by the F -term. The pressure loss that occurs due to flow separation is modeled in approximation by means of the empirical recovery factor χ in the convective term (for unseparated flow χ=1, while for separated flow χ<1). Regarding the location of separation, Cancelli...
Journal Articles
Article Type: Technical Papers
J Biomech Eng. April 2003, 125(2): 189–196.
Published Online: April 9, 2003
... of the flow separation on the stationary mass transport applying a permeability boundary condition at the water-permeable wall was analyzed using the finite element code FTSP. The results show an increase of luminal ADP surface concentration in the upstream and in the downstream tube of the sudden expansion...