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studentFLUENT - Tutorial Library - ANNULUS
Annulus schematic.
The purpose of this tutorial is to illustrate the setup and solution of a 3D, turbulent flow of a non-Newtonian fluid.
Turbulent non-Newtonian flows are often encountered in the oil and gas industry. These fluids are used in the drilling of oil wells to transport the cuttings to the surface, and to keep solids in suspension during stationary periods. In directional drilling, where an eccentric annulus is often used, there is a tendency for the cuttings to accumulate in the narrowest gap where the velocity is lowest. Since turbulence tends to suppress such accumulation, knowledge of the velocity profiles in the annulus are essential in the design and operation of these drills.
In this tutorial, you will learn how to:
- Read an existing mesh file in FLUENT.
- Check the grid for dimensions and quality.
- Set up the material for non-Newtonian viscosity and switch to turbulence formulation for the same using text user interface (TUI) commands.
- Solve a time dependent simulation.
- Set up periodic flow conditions in FLUENT.
- Set up transitional flow conditions using k − w turbulence model.
- Create isosurfaces and isoclips for postprocessing.
- Examine the results and compare them with experimental data.
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