Blood Vessel (FSI) with the Pulse Velocity, CFD Simulation Ansys Fluent Training


In this project, a Blood Vessel (FSI) with the Pulse Velocity has been simulated and the results of this simulation have been investigated.

This product includes Geometry & Mesh file and a comprehensive Training Movie.
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Blood Vessel Project Description

In this project, which has been done by Ansys Fluent software, a blood vessel is simulated with a wall, where the displacement of the wall is also visible. We have defined the pulse velocity using UDF for the input, and the output is atmospheric pressure. This FSI simulation was performed inside the fluent.

Geometry & Mesh

The three-dimensional geometry of this project has been produced with Spaceclaim software The length of the calculation domain is 72 mm, and its height and width are 5 mm.


The meshing of this project has been done with Ansys Meshing software, and the type of elements is unstructured. Also, the total number of elements is 55632.


Blood Vessel CFD Simulation

  1. the pressure-based solver method has been selected.
  2. The simulation is transient.
  3. The gravity effect is ignored.

The following tables represent a summary of the defining steps of the problem in this project and its solution:

Viscous model k-w
Model SST
 blood Density 1060 kg/m^3
Viscosity 0.004 kg/(m-s)
vessel Density 1500  kg/m^3
Youngs modulus 1.5e06 pa
Poisson ratio 0.32
Boundary conditions
Inlet Velocity inlet
Velocity magnitude UDF
Outlet Pressure outlet
Gauge pressure 0 pa
Walls Intrinsic FSI
Solution Methods
Pressure-velocity coupling   Coupled
Spatial discretization Pressure Second-order
Momentum second-order upwind
Turbulent kinetic energy first-order upwind
Turbulent dissipation rate first-order upwind
Initialization method   Standard


After the simulation, we can observe the velocity and pressure contours inside the vessel, and we can also examine the stresses and displacements created in the vessel wall due to the force exerted by the blood.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.


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