Further Improvements

The case modeled in this tutorial lends itself to parametric study due to its relatively small size. Here are some things you may wish to try:

• Separate wall-6 into two walls.

  Mesh $\rightarrow$ Separate $\rightarrow$ Faces...

  Specify one wall to be stationary, and rerun the calculation.

• Use adaption to see if resolving the high velocity and pressure-gradient region of the flow has a significant effect on the solution.

• Introduce a non-zero swirl at the inlet or use a velocity profile for fully-developed pipe flow. This is probably more realistic than the constant axial velocity used here, since the flow at the inlet is typically being supplied by a pipe.

• Model compressible flow (using the ideal gas law for density) rather than assuming incompressible flow text.

This tutorial guides you through the steps to reach an initial solution. You may be able to obtain a more accurate solution by using an appropriate higher-order discretization scheme and by adapting the mesh. Mesh adaption can also ensure that the solution is independent of the mesh. These steps are demonstrated in Tutorial  1.