# Large eddy simulation of blood flow in a realistic model of the Circle of Willis

The dataset was produced using fully resolved Large Eddy Simulation (LES) and multiharmonic rheological flow models in a realistic *in silico *phantom of the CoW.

Researchers and biomedical engineers could utilize this dataset to fine-tune their CFD models and establish standard reference simulation(s) before carrying out further parametric studies.

Having the dataset released under an open-access license encourages the community to further expand the dataset using different investigation modalities.

CoW Model reference:

- N. Wilson, K. Wang, R. Dutton, C.A. Taylor, "A software framework for creating patient specific geometric models from medical imaging data for simulation based medical planning of vascular surgery", Medical Image Computing and Computer-Assisted Intervention MICCAI 2001, Springer, 2001, pp. 449–456. doi: 10.1007/3-540-45468-3_54
- N. Xiao, J.D. Humphrey, C.A. Figueroa, "Multi-Scale Computational Model of Three-Dimensional Hemodynamics within a Deformable Full-Body Arterial Network”, Journal of Computational Physics, 2013, Vol 244, pp. 22-40. doi: 10.1016/j.jcp.2012.09.016

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Readme.txt

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**Dataset ID** 0001v1

**Dataset category** CFD

**Dataset domain** Circle of Willis

**Spacetime frames** 3DSteady

**File formats** *.vtm, *.vtu

**Software** ParaView, VMTK

**Dataset description:**

Time averaged data of the flow in a realistic CoW model using Large Eddy Simulation of blood flow using non-Newtonian whole blood viscosity model.

**Total simulation time (time averaging limits)**: from 0 to 3 seconds.

**Timestep** 0.5 millisecond.

**Fields** Scalar, vector, tensor

**Field variables**:

**Mean_mxt** Time averaged grid quality index (Pope index), unit dimensionless (%).

**Mean_pressure** Time averaged guage static pressure, unit Pascal (N/m2).

**Mean_pressure_coefficient** Time averaged pressure coefficient, unit dimensionless (num).

**Mean_psi** Time averaged psi (the ratio between non-Newtonian and Newtonian viscosities), unit dimensionless (num).

**Mean_velocity_magnitude** Time averaged velocity magnitude, unit (m/s).

**Mean_x_velocity** Time averaged x-velocity component, unit (m/s).

**Mean_y_velocity** Time averaged y-velocity component, unit (m/s).

**Mean_z_velocity** Time averaged z-velocity component, unit (m/s).

**Mean_wall_shear** Time averaged wall shear stress, unit Pascal (N/m2).

**Mean_x_wall_shear** Time averaged wall shear stress on XZ or XY planes, unit Pascal (N/m2).

**Mean_y_wall_shear** Time averaged wall shear stress on YZ or XY planes, unit Pascal (N/m2).

**Mean_z_wall_shear** Time averaged wall shear stress on YZ or XZ planes, unit Pascal (N/m2).

**sgs_filterlength** LES Subgrid scale filter length, unit (m).