Setting the Material Properties

Define the phases and set the appropriate material properties.

Define the materials corresponding to each of the mixture components under the Phases node.

Note

In multiphase flow problems that include surface tension effects, define the densest fluid first because contact angle values at the wall are always specified relative to the first-defined fluid.

To define the phases and set the material properties:

  1. In the Injector continuum, right-click the Models > Multiphase > Phases node and create a new phase.
  2. Rename the Phase 1 node to C3H8O3.
  3. For the C3H8O3 phase, select the following models:

    Group Box

    Model

    Material

    Liquid

    Equation of State

    Constant Density

  4. Click Close.
  5. Create a second phase and rename it to Air.
  6. For the Air phase, select the following models:

    Group Box

    Model

    Material

    Gas

    Equation of State

    Constant Density

  7. Click Close.

    The Multiphase node contains the phase model objects as shown below:



The default selection of air is appropriate for this exercise, but water must be replaced with glycerine from the Simcenter STAR-CCM+ material database.

  1. Right-click the C3H8O3 > Models > Liquid > H2O node and select Replace with.
  2. In the Replace Material dialog, expand the Material Databases > Standard > Liquids node.
  3. Activate C3H8O3 (Glycerine).


  4. Click OK to replace the material.

    The phase model objects appear as shown below.



  5. Save the simulation.