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Concentric Cylinders-Couette Flow

Couette flow between two circular cylinders is used to investigate the behaviour of velocity boundary condition for complex geometries with q-values. In this flow, the inner cylinder with radius $r_1$ rotates with a constant angular velocity $\omega$ and the outer cylinder with radius $r_2$ is kept stationary. This Couette flow has the following analytical solution $$\begin{equation} u_\theta(r) = \frac{u_0 \beta}{1-\beta^2} \left( \frac{r_2}{r} - \frac{r}{r_2}\right) \end{equation}$$ where $u_0=\omega r_1$ and $\beta=r_1/r_2$.

Here are the list of test cases:

• Single-level
• Multi-level

The geometry of the this cylindrical channel is created with the help of the STL in cylinder_Dia1m.stl.

In these test cases, in addition to the aforementioned features, you will also learn how to:

• Create a mesh with boundaries with q-values using Seeder.
• Post-processing and visualization in Paraview.
• Create a 2D plot using Gleaner tool. Gleaner is a Python tool which extracts data from Musubi ascii output and uses matplotlib in python to create a plot.