Materials

Fluid

In this example the Fluid Properties have to be assigned to the created surfaces. This is done by means of the Fluid Materials window. For this example only ADVECT page data have to be updated. Through this page we can insert the properties of every species. In our case we will set the total diffusion (f2) of Species 1 to 0.005 and to 0.01 for Species 2 (see Figure 110 and Figure 111).

Figure 110 Species 1  properties definition.

Before to insert the data for the Species 2, it is necessary to create the new specie. For doing it, press the '+' button below the species list. Finally, this material have to be assigned to the external surface of the problem.

Remark:

In order to apply boundary conditions or define any other property for a species, this should be first created in any material. Once it is created in a material, it is automatically created for the rest of existing materials.

Figure 111 Species 2 properties definition

From the defined Fluid we will now create a new material with the name Fluid_Source with the same properties inserted for the Fluid material. This material will be used as an auxiliar tool for defining initial conditions.