Fluid Types

About Fluid Types

A Fluid Type describes the thermodynamic behavior assigned to model instances in a simulation. That is, a Fluid Type represents the fluid used in your process. You can copy and then modify a Fluid Type or create new custom Fluid Types.

You use the Fluid Editor to modify Fluid Types. Each Fluid Type uses a specified fundamental Thermo Type. The Thermo Type defines the equations or external DLLs that AVEVA Process Simulation uses to solve for fluid properties. It also determines the parameters, starting values, methods, and components that are available for the Fluid Type. After you select the Thermo Type for the Fluid Type, you can modify the parameters, starting values, methods, and components for the Fluid Type. You can save a Fluid Type to a Model Library stored in the Repository or to the simulation-specific Model Library.

Concepts

• There are multiple fluid categories for simple fluids, compositional fluids, and special fluids, such as supercritical carbon dioxide and isomeric hydrogen.

• You can create a new Fluid Type or modify an existing SimSci Fluid Type to make changes so it fits your specific requirements.

• Compositional fluids can include library components or petro components, which are characterized by molecular weight, boiling point, and specific gravity.

• Changes that you make to a Fluid Type are automatically saved.

• Fluid Types are stored in Model Libraries or with a simulation.

• Fluid Types for a simulation must be placed in the simulation-specific Model Library.

Actions

• Specify the Thermo Type.

• For ideal, compressible, and incompressible fluids, define the parameters and starting conditions for the Fluid Type.

• For compositional fluids, define the starting conditions, methods, phases, and components for the Fluid Type.

• Import an icon file and associate it with a Fluid Type.

• Report the thermodynamic calculation warnings.

• Copy a Fluid Type to the simulation-specific Model Library.