Non Newtonian Blood Pulse Flow in a Vein, ANSYS Fluent CFD Training

$183.00 Student Discount

  • The problem numerically simulates Non-Newtonian Blood Pulse Flow in a Vein using ANSYS Fluent software.
  • We design the 3-D model by the Design Modeler software.
  • We Mesh the model by ANSYS Meshing software, and the element number equals 397388.
  • We perform this simulation as unsteady (Transient).
  • We use a UDF to define the pulse of the blood flow.
  • The Carreau Equation is used for viscosity definition to consider non-newtonian blood.
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Special Offers For Single Product

If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.



This simulation is about non-newtonian blood pulse flow in a vein via ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.

The fluid used in this simulation is blood, a non-Newtonian fluid. Non-Newtonian fluids are fluids whose viscosity varies with their reaction rate, meaning they lack a specific viscosity.

In this type of fluid, the relationship between the shear stress variations and the applied stress rates is nonlinear; therefore, there is no constant coefficient of fit for viscosity. We do this transient simulation for 0.5 s. By the way, we apply a User-Defined Function (UDF) to model the pulse of the blood flow.

Since blood flow doesn’t have constant velocity and pulsed, the velocity function must be used periodically using the User-Defined Function code.

The geometry of the present model is drawn by Gambit software. The present model consists of a cylindrical vessel and two smaller vessels with a smaller size and diameter, such that one branch has a 90-degree angle and the other, a branch with a 45-degree curvature.

The present model consists of one input section and two output sections.

The model is then meshed by ANSYS Meshing software. The model mesh is unstructured, and 397388 cells have been created.

Non Newtonian Blood Method

Since the fluid used in this simulation is blood at a density of 1050 kg/m3 and blood is a Non-Newtonian fluid type, the Carreau equation with certain parameters has been used.

Newtonian fluids generally have constant viscosity during force application, but non-Newtonian fluids have variable viscosity during force application, which has different types.

Time-dependent non-Newtonian fluids have two categories: Rheopectic, such as printer ink and cream, which increase their viscosity over time, and Thixotropic, such as honey, whose viscosity decrease when the force is applied.

Time-independent non-Newtonian fluids are also divided into three groups: Dilatants such as starch and clay, whose viscosity depends only on the force value applied, and Pseudoplastic, such as greases, paints, soaps, and ketchup, which are inversely correlated with the force value applied.

Other groups called Bingham, such as toothpaste and silica nanocomposites, have a stress threshold or a certain amount of force and tension to flow. In the present simulation, blood is used as a Pseudoplasticity non-Newtonian fluid defined by the Carreau model.

This model attempts to create a wide range of fluids by establishing a curve commensurate with the Newtonian and non-Newtonian fluid functions of the type of subtractive stress (Pseudoplasticity).

Non Newtonian Blood Conclusion

After simulation, the contours of pressure and wall shear stress are obtained at different times. The results show that the flow inside the vessel is completely pulsatile; Because the pressure changes at different times.

Also, the results show that the pressure corresponds to the wall shear stress. An increase in pressure inside the vessel leads to an increase in the wall shear stress.

1 review for Non Newtonian Blood Pulse Flow in a Vein, ANSYS Fluent CFD Training

  1. Ms. Savanna Rippin

    What boundary conditions are used in the Non-Newtonian Blood Flow in the Vein CFD Simulation?

    • MR CFD Support

      We use pressure boundary conditions at the inlet and outlet of the vein. These conditions are based on typical physiological pressures.

  2. yacine

    i need to dowland this project and i hve a question
    i need to activate FSI structural analyse for this project and i have not the materiel of my géometrie haw a can selected the material and proprities of material

  3. Bertram Langworth

    How do you model the non-Newtonian behavior of blood in this simulation?

    • MR CFD Support

      We use the Carreau-Yasuda model in ANSYS Fluent to simulate the non-Newtonian behavior of blood. This model accurately represents the shear-thinning property of blood.

  4. Ruthe Kozey

    The Non-Newtonian Blood Flow in the Vein CFD Simulation is incredibly accurate and detailed. Great job!

    • MR CFD Support

      Thank you for your kind words! We strive to provide accurate and detailed simulations to our customers.

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