SAND96-8211
Unlimited Release
Printed January 1996
PLUG:
A FORTRAN PROGRAM FOR THE ANALYSIS OF PLUG FLOW REACTORS
WITH GAS-PHASE AND SURFACE CHEMISTRY*
Richard S. Larson
Thermal and Plasma Processes Department
Sandia National Laboratories
Livermore, CA 94551-0969
ABSTRACT
This manual describes the structure and usage of the computer program PLUG,
which simulates the behavior of plug flow chemical reactors. More specifically,
the code is designed to model the non-dispersive one-dimensional flow of a
chemically reacting ideal gas mixture in a conduit of essentially arbitrary
geometry. The code makes use of the CHEMKIN and SURFACE CHEMKIN software packages
to handle gas-phase and heterogeneous kinetics as well as thermodynamic properties.
In addition, the standard implicit code DASSL is used to solve the set of differential/
algebraic equations describing the reactor. These equations are briefly discussed
here, after which the procedures for running PLUG are described in some detail.
Input and output files for a sample problem involving chemical vapor deposition
are given.
*Copyright 1996, Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000, there is a non-exclusive license for use of
this work by or on behalf of the U. S. Government. This manual
describes version 2.0.
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