Introduction

This tutorial illustrates using ANSYS Workbench to set up and solve a three-dimensional turbulent fluid flow and heat transfer problem in a mixing elbow using ANSYS FLUENT fluid flow systems. This tutorial is designed to introduce you to the ANSYS Workbench tool set using a familiar geometry (the first tutorial in the separate Tutorial Guide). Within this tutorial, you will create the elbow geometry and the corresponding computational mesh using the geometry and meshing tools within ANSYS Workbench. You will use ANSYS FLUENT to set up and solve the CFD problem, then visualize the results in both ANSYS FLUENT and the ANSYS CFD-Post postprocessing tool. Some capabilities of ANSYS Workbench (e.g., duplicating fluid flow systems, connecting systems, and comparing multiple data sets) are also examined in this tutorial.

This tutorial demonstrates how to do the following:

• Launch ANSYS Workbench.

• Create an ANSYS FLUENT fluid flow analysis system in ANSYS Workbench.

• Create the elbow geometry using ANSYS DesignModeler.

• Create the computational mesh for the geometry using ANSYS Meshing.

• Set up the CFD simulation in ANSYS FLUENT, which includes:
  • Set material properties and boundary conditions for a turbulent forced convection problem.

  • Initiate the calculation with residual plotting.

  • Calculate a solution using the pressure-based solver.

  • Visually examine the flow and temperature fields using ANSYS FLUENT (and ANSYS CFD-Post).

• Create a copy of the original ANSYS FLUENT fluid flow analysis system in ANSYS Workbench.

• Change the geometry in ANSYS DesignModeler, using the duplicated system.

• Regenerate the computational mesh.

• Recalculate a solution in ANSYS FLUENT.

• Compare the results of the two calculations in ANSYS CFD-Post.