Building Custom Simulation Models using Aspen Custom Modeler

• Gain the practical skills and knowledge to specify a complete problem description
• Build a flowsheet and run simulations
• Tabulate and plot simulation results
• Use automation to pass information to and from Microsoft® Excel and control the simulation

• Instruction on basic topics
• Demonstrations of general features
• Instructor-guided exercises
• Hands-on workshops that apply learned concepts
• Example problems
• Detailed course notes

The course assumes little or no familiarity with the use of Aspen Custom Modeler

Familiarity with process modeling and modeling techniques is expected.

EAP101 Aspen Plus: Process Modeling

EAP2411 Aspen Plus Dynamics

Graphical User Interface

·        Describe navigation through ACM graphical user interface.

·        Provides a quick tour of Aspen Custom Modeler with a simple example

·        Learn how to create a flowsheet.

·        Workshop: Build a simple flowsheet and run the simulation.

Review of Equation Oriented Concepts

·        Explain Equation Oriented modeling.

·        Review the principle of system resolution.

·        Discuss steady state modes.

·        Examine initialization and dynamic modes.

Overview of the Modeling Language

·        Explain Aspen Custom Modeler language syntax for:

- Model

- Variable Types

- Port Types

·        Workshop: Illustrate Variable Type, Port Type and Model

Parameters

·        Identify and explain the parameter types used by Aspen Custom Modeler

Conditions

·        Explain Structural and Run Time conditions.

·        Workshop: Extend a tank model to add an overflow port

Stream Types

·        Identify and explain stream types used by Aspen Custom Modeler

·        Workshop: Use MaterialStream stream type

Language Details

·        Present additional features of the Aspen Custom Modeler language and graphical user interface

Non-Isothermal CSTR

·        Workshop: Build a model for a non-isothermal CSTR reactor, cooled with a jacket

Sets, Arrays and Multiports

·        Explain how to declare sets (group of elements).

·        Show how to use sets.

·        Identify and explain multiports

·        Workshop: Illustrate the use of sets, arrays and multiports

Forms (Tables and Plots)

·        Show how to display data in Aspen Custom Modeler graphical user interface using Forms.

·        Explain different types of forms, Table, Plots, History Table

·        Workshop: Create model forms

Submodels and Hierarchy Blocks

·        Explain submodels and Hierarchy blocks

·        Workshop: Build a model using submodels.

Handling Components and Physical Properties

·        Show how to set up properties for Aspen Custom Modeler

·        Explain how to create Component lists.

·        Show how to calculate physical property using procedures and submodels.

·        Workshop: Use Aspen Properties for the physical property calculations in ACM

Using ACM models in Aspen Plus and HYSYS

·        Identify and explain how to export models to Aspen Plus or HYSYS.

·        Show how to create and modify Aspen Custom Modeler models in Aspen Plus

·        Workshop: Export a model to Aspen Plus.

Snapshots and Results

·        Identify the purpose of snapshots and results.

·        Explain usage of snapshot management tool.

·        Show where snapshots and results are located.

·        Rewind and Restart operations.

·        Copy Values and Advanced Copy Values

·        Workshop: Illustrate the use of Rewind and Snapshots

Tasks

·        Identify the purpose of tasks.

·        Explain syntax of task instructions.

·        Workshop: Use the task feature to model a lifting valve and a step change on a variable

Solutions Methods

·        Identify and explain group decomposition, variable equivalencing and non-linear system resolution.

·        Discuss modeling advice recommendations

·        Review convergence troubleshooting options

·        Workshop: Use some of tools and settings available in Aspen Custom Modeler to troubleshooting convergence problems

Integration Methods

·        Review integrator options.

·        Present concept of index.

·        Provide advice for troubleshooting.

Scripts and Automation

·        Show Simulation scripts.

·        Show how to run ACM from Excel (Automation)

·        Workshop: Illustrate the use of scripts in Aspen Custom Modeler

·        Workshop: Illustrate the use of automation of Aspen Custom Modeler with Excel

Structures

·        Identify and explain structure types.

·        Workshop: Use the structure type to store reaction data.

Optional Topics

·        Create procedures to interface ACM to FORTRAN/C/C++ calculations

·        Model partial differential equations

·        Introduction to Estimation

·        Review of optimization capabilities

·        Demonstrate Aspen Model Runner

·        Each lecture is typically followed by a workshop