Dynamic Flow Modelling Software

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i For this purpose the System Dynamics Approach is a very good solution, which is allready in use in the field you mentioned.

There are several software packages you can use for both, modeling and visualisation:

1. PowerSim:
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POWERSIM AS
PO Box 206, Knarvik Senter
5100 ISDALSTOE
NORWAY
Phone: 47 5634 2400
Fax: 47 5634 2401
Email: powersim@powersim.no

http://www.powersim.no/

2. Vensim:
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Ventana Systems, Inc.
149 Waverley Street
Belmont MA 02178
Phone 617 489 5249
Fax: 617 489 5316
Email: vensim@world.std.com
http://www.std.com/vensim/VENSIM.HTM

3. Dynamo:
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Pugh-Roberts Associates
41 William Linskey Way
Cambridge MA 02142
Phone: 617 864 8880
Fax: 617 864 8884

All three packages are WINDOWS-like and (in the professional or educational version) very powerful. You can build your model in two ways - first by equations, second by drawing. Or you can switch from one to the other. They have serveral mighty tools to visualize both, the behavior and the results.

No. 4 is STELLA / ithink:
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High Performance Systems
45 Lyme Road Suite 300
Hanover NH 03755
Phone: 603 643 9636
Fax: 603 643 9502
Email: support@hps-inc.com
http://www.hps-inc.com/hps.html

The problem here are the modeling capabilities. Stella / ithink are good for the presentation of results and for teaching, but most people use it in addition and not alone.

Using System Dynamics as the fundamental theory they (all four) are able to be used in very different fields, e.g. economics, engineering, politic sciences, physics and environmental sciences.

I personally prefer PowerSim. In most cases is has a special feature included one version before other software packages have it.

Second, I like the easy use of the visualization tools.

Third, it has a good interface to programming languages I use (Delphi, and C++).

I addition there is a email discussion list for System Dynamics at Majordomo@world.std.com

Use the following subscription form:

subscribe system-dynamics your_name

I hope this will help a bit.

Yours,
Joern W. Ewaldt

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Dipl.-Kfm. Joern W. Ewaldt
Scientific Assistant
at the Chair of Managerial Economics,
Management Accounting and Managerial Control

Brandenburg Technical University of Cottbus
Department of Mechanical, Electrical and Industrial Engineering
03013 Cottbus / Germany
Tel. +49 355 / 69 2993
Fax. +49 355 / 69 3324
Email: j.ewaldt@rz.tu-cottbus.de
URL: http://www.wiwi.tu-cottbus.de/controlling

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