Traditional CFD Boundary Conditions Applied to Blood Analog Flow Through a Patient-Specific Aortic Coarctation
Wang, X., Walters, K., Burgreen, GW, & Thompson, D. (2013). Traditional CFD Boundary Conditions Applied to Blood Analog Flow Through a Patient-Specific Aortic Coarctation. 2013 International Workshop on Statistical Atlases and Computational Models of the Heart,. Nagoya, Japan.
Flow of a blood analog is modeled through a patient-specific aortic coarctation using ANSYS Fluent software. Details of the patient
data (aortic geometry and prescribed ow conditions) were provided by
the MICCAI-STACOM CFD Challenge website. The objective is to predict a blood pressure dierence across the rigid coarctation under both
rest and exercise (stress) conditions. The supplied STL geometry was
used to create coarse and ne viscous meshes of 250K and 4.6M cells. Our CFD method employed laminar, Newtonian flow with a total pressure
inlet condition and special outlet BCs derived from reconstructed
flow waveforms. Analysis setup and outlet BCs were treated as a traditional non-physiological CFD problem. CFD results demonstrate that the supplied AscAo pressure waveform and flow distributions are well matched by our simulations. A non-uniform pressure gradient field is predicted across the coarctation with strong interactions with each supra-aortic vessel branch.