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The prototype back-end server that wraps AspenPlus utilized a sophisticated approach for
interfacing between the VE-Suite computational engine and AspenPlus. Figure 1.1.3 is a
schematic diagram of the architecture of the component. As seen in this figure, AspenPlus lives
at the lowest-level of functionality. Wrapping AspenPlus at the next layer up is a C++ interface
library developed by REI (CASI). This interface library was created to help abstract AspenPlus
from software being developed for this project.
The final layer in the hierarchy is the VE-Suite back-end CORBA server, which wraps all the
aforementioned levels. This server interacts with the VE-Suite computational engine and moves
data and operational requests to and from AspenPlus through the various software layers. This
server also contains code to read and parse the AspenPlus .bkp file to determine the network
layout and connectivity for the target flowsheet (this code was provided by NETL and ISU).To VE-Suite Computational Engine
VE-Open Std. IDL
.bkp Parser -
2D Flowsheet
Geometry
(ISU/NETL)
Aspen Plus Interface
C++ Class Library
(REI)VE-Suite APECS Module
(CORBA Server)
Aspen Plus
Automation EngineFigure 1.1.3. Schematic diagram of the VE-Suite APECS Module.
VE-Suite-to-APECS Coupling - Prototype Demonstration
Using the prototype implementation of the VE-Suite-to-APECS coupling software described
above, REI and ISU performed a demonstration to illustrate the basic functionality.
The physical layout of the computational resources used in the demonstration is illustrated in
Figure 1.1.4. VE-Conductor (the user interface component) and the Computational Engine were
run on computers located at the ISU campus. The APECS VE-Suite component, which
encapsulates AspenPlus, the AspenPlus C++ interface and CORBA wrapper, were run at the REI
offices in Salt Lake City.
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Bockelie, Mike; Swensen, Dave; Denison, Martin & Borodai, Stanislav. A Virtual Engineering Framework for Simulating Advanced Power System, report, June 18, 2008; United States. (https://digital.library.unt.edu/ark:/67531/metadc901076/m1/11/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.