Using Fluid Types

Fluid Types identify the thermodynamic behavior used by models in a simulation. AVEVA Process Simulation provides predefined Thermo Types to associate with the Fluid Type that you create:

• CarbonDioxide: Models steam by using Span and Wagner for supercritical CO2 systems

• Compositional: Models a multi-component system by using the SRK or PR thermodynamic methods

• IdealGas: Models gases by using ideal gas equations

• IncompressibleLiquid: Models simple liquids in the form of a simple thermodynamics fluid

• IsomericHydrogen: Models mixtures of ortho- and para-hydrogen

• Steam: Models steam by using the IF97 steam tables

Method 1 – Assign fluids to models

1. Open the Properties Inspector for the desired model.

2. Expand the Parameters section and locate the FluidType parameter.

3. Select the Value dropdown arrow to select the desired Fluid Type, as shown in the following figure. You can also select the Fluid Type from the Simulation Manager.

   

   The Fluid State is shown in the Properties Inspector. Additionally, the Fluid Type selected here will automatically propagate to models connected downstream.

   In addition to manually assigning a Fluid Type to a model, you can automatically assign a Fluid Type to the source model.

Method 2 – Automatically assign a Fluid Type to the source model

4. Browse to the Fluids Model Library that contains the Fluid Type that you want.

5. Drag the Fluid Type on top of the source model on the Canvas.

   

   The Fluid Type is assigned to the model and visible when you open the Properties Inspector.