DEVELOPMENT OF TECHNOLOGIES AND ANALYTICAL CAPABILITIES FOR VISION 21 ENERGY PLANTS Page: 4 of 9
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NETL (DOE)-Fluent, Inc Cooperative Research and Development Agreement DE-FC26-00NT40954
OSH (Fluent) gave a preliminary presentation of Aspen Plus and the integration of Aspen Plus
and Fluent to CERC (IBL) and Fluent (RLC, PEF, MXS) personnel. IBL (CERC) and MXS
(Fluent) attended Aspen Plus training in Boston, MA. on December 5-7, 2000.
SEZ (AspenTech) attended Fluent training on December 4-7, 2000.
Task 2.2 User survey
To collect information from the users a pre-user-requirements-document (preURD) was written
by Fluent. Fluent and AspenTech personnel reviewed the document. A list of nearly forty users
of FLUENT and Aspen Plus that have an interest in the integration of CFD and process
simulation was developed. The survey will be sent out to those users, and their responses will be
collected in January 2001.
In a parallel effort a web based survey form is being developed. This form will be posted on the
Vision 21 project web site and announced to a larger number of users through a write up in the
Aspen eFlash, AspenTech's electronic newsletter. The user responses will be collected
electronically for about three months.
CERC (KJC) started writing a draft version of the User Requirements Document.
Task 2.6 Software Design
Much work was done in prototyping software integration based on earlier work done by
AspenTech and Fluenti. SEZ has developed a working prototype using CAPE OPEN interfaces.
SEZ reproduced the results of the coupled Aspen Plus/Fluent CFD simulation of the Continuous
Stirred Tank Reactor (CSTR) described in that paper using CAPE OPEN interfaces. In the paper,
the FLUENT CFD model is integrated into the process simulation via the Aspen Plus USER2
interface. SEZ is currently using this CSTR example to prototype the use of FLUENT CFD
models in Aspen Plus via the Cape Open unit interface. The implementation is written in Visual
Basic and uses the COM interface standard. A CFD block can be added to the Cape Open model
library. The Cape Open CFD blocks can be placed on the Aspen Plus flowsheet. SEZ
implemented the ICapeUnitEdit_Edit method to bring up the Fluent GUI when the user right
clicks on the Cape Open CFD model on the Aspen Plus flow sheet and selects Edit Model.
SEZ is currently focusing on implementing the ICapeUnit_Calculate method, which transfers data
from Aspen Plus to FLUENT, spawns and executes the FLUENT CFD model, and gives the
results back to Aspen Plus. The implementation is specific to the CSTR model discussed above
in terms of the number of ports, number and types of chemical components, etc. Ultimately, this
will need to be parameterized so that the user places a configurable model type onto the flowsheet
instead of a fixed model instance. Several new Cape Open thermo calls were required in the
ICapeUnit_Calculate implementation. SEZ provided PEF at Fluent with information on
AspenTech's use of ActiveX automation in Aspen Plus and Aspen Custom Modeler.
IBL (CERC) has started working on running FLUENT and Aspen Plus jointly.
IBL (CERC) read some of the final documents for better understanding the CAPE-OPEN
standard. Searched web for additional information on CAPE-OPEN: found a site with final
documents on this standard: http://www-i5.informatik.rwth-
1 Oshinowo, L., Haidari, A., Kisala, T., and Field, R., "Improving Reactor Modeling In Sequential-Modular
Process Simulation Using CFD," Chemical Reaction Engineering VII: Computational Fluid Dynamics,
Queb6c City, Canada, August 6-11, 2000.
Fluent, Inc. January 23, 2001
2
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Madhava Syamlal, Ph.D. DEVELOPMENT OF TECHNOLOGIES AND ANALYTICAL CAPABILITIES FOR VISION 21 ENERGY PLANTS, report, January 23, 2001; United States. (https://digital.library.unt.edu/ark:/67531/metadc738979/m1/4/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.