The Reacting Pipe Flow (rpfl) interface (
), found under the
Chemical Species Transport branch (
) when adding a physics interface, is a multiphysics interface that combines the three physics interfaces: Pipe Flow, Heat Transfer in Pipes, and Transport of Diluted Species in Pipes. The physics interface approximates the flow profiles in pipes and channels by a 1D assumption on lines in 2D and 3D. Depending on additional add-on products, multiple species can be modeled.
When this physics interface is added, these default nodes are also added to the Model Builder —
Fluid,
Pipe Properties,
Temperature,
Pressure,
Concentration, and
Initial Values. Then, from the
Physics toolbar, add other nodes that implement, for example, boundary conditions and volume forces. You can also right-click
Reacting Pipe Flow to select physics features from the context menu.
The Label is the default physics interface name.
The Name is used primarily as a scope prefix for variables defined by the physics interface. Refer to such physics interface variables in expressions using the pattern
<name>.<variable_name>. In order to distinguish between variables belonging to different physics interfaces, the
name string must be unique. Only letters, numbers, and underscores (_) are permitted in the
Name field. The first character must be a letter.
The default Name (for the first physics interface in the model) is
rpfl.
Enter a Reference pressure level pref (SI unit: Pa). The default value is
1[atm].