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- Newsgroups: comp.object
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- From: henley@eng.auburn.edu (James Paul Henley)
- Subject: Re: Is Borland the leader in technology?
- Message-ID: <henley.921123141810@wilbur.eng.auburn.edu>
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- Organization: Auburn University Engineering
- References: <1eecf5INNim8@early-bird.think.com> <henley.921120134945@wilbur.eng.auburn.edu> <WELCH.92Nov20202117@sacral.cis.ohio-state.edu>
- Date: Mon, 23 Nov 1992 20:18:10 GMT
- Lines: 51
-
- In article <WELCH.92Nov20202117@sacral.cis.ohio-state.edu> welch@sacral.cis.ohio-state.edu (Arun Welch) writes:
- >In article <henley.921120134945@wilbur.eng.auburn.edu> henley@eng.auburn.edu (James Paul Henley) writes:
- >
- > So far, every attempt to implement object oriented Chemical Engineering
- > applications in Smalltalk and Lisp have fizzled.
- >
- >Revise that to every one of *your* attempts have fizzled. The AI in
- >ChemE group here's been using Lisp for a number of years, on a wide
- >variety of machines and implementations, using a variety of OOP
- >languages in Lisp. I know a bunch of other sites using it too.
- >
- >...arun
- >----------------------------------------------------------------------------
- >Arun Welch
- >Lisp Systems Programmer, Lab for AI Research, Ohio State University
- >welch@cis.ohio-state.edu
- >
- >
- >
- Where do they publish? I haven't been able to find anything recently. A
- graduate student here who has been interested in the field hasn't either.
- The last thing we heard about using Object Oriented design in LISP for Chemical
- Engineering was KEE from MIT. They have been silent of late.
-
- Could you give me an example of designing a 10 stage distillation column, with
- a Murphree Vapor efficiency of 74%, and a diameter of 2 meters? Using
- experimental data for equilibrium calculations, and responding to changes in
- feed quality, feed composition, reflux flow rate, reboiler heat load,
- downstream pressure fluctuations in the Distillate and Bottoms streams?
- To make things simple, just allow for 2 components with relatively constant
- specific heats over the temperature range - say, Methanol and Water.
-
- How would I use the Object Oriented Model in a model predictive controller,
- and could a model of the model predictive controller itself be incorporated
- in a dynamic simulation of the distillation column?
-
- Could I implement the column on my PC, and have it dynamically linked to
- a control computer which was sending temperature, pressure, composition,
- and flow rate information in from an actual process, and then send the
- model's bottoms and distillate compositions back to a model predictive
- controller on the column?
-
- Finally, what size computer would be necessary to do a dynamic simulation of
- a small chemical plant, say a coal gasification plant which produced as a
- final product methanol?
-
- Dr. James P. Henley Jr.
- Visiting Assistant Professor
- Department of Chemical Engineering
- Auburn University
-
-