UNARY module allows thermodynamic data
for different phases of unary
systems (ie for systems containing one component) to be plotted and
tabulated as a function of temperature.
Graphical output is
sent both to the screen and to a file so that the contents can be
routed to a local plotter, either from within the program or by using
system commands. Data for each phase are
plotted with a different line style.
The module requires
the specification of the source of the thermodynamic data for the
system. The source datafile may have been created previously using the ACCESS
module. Different formats are available for
storing unary data in a datafile. After selecting the range of
the calculation a plot or tabulation of any of the standard
quantities can be obtained.
Brief summary of commands
allows the user to define the name of a datafile from which the
data are to be read. Two formats are available for the storage of
the unary data in datafiles.
LIST displays on the screen the current definition of
the problem in
the phases present
(b) the temperature range selected for the calculations
CLASSIFY allows the user to suspend consideration of some
of the phases
from the plots or tabulations of the thermodynamic quantities.
It also permits a reference state for the component to be defined.
STEP allows the user to specify the range of
temperatures to be used for
the plot or table.
GO initiates the computation and plotting or
tabulation of the
thermodynamic functions within the range of temperatures
specified. Graphical output is sent simultaneously to the screen
and a system scratch file. Hard copy output can be obtained by
using the command LASER which copies the contents of this file
to your local plotting device.
LIMITS allows the user to obtain, on the screen, a list
of the maximum numbers of components, phases and species for which the
current version of MTDATA has been configured. The maximum number of
abscissa points in MULTIPHASE plots is also shown.
PLOT allows the user to define which thermodynamic
function is to be
plotted and to specify the scale of the diagram. The PLOT
command also sets PLOT mode to ON and TABULATE mode to OFF. The PLOT
command may also be used to define the name of a graphics metafile to
which the graphics commands used to generate a plot are sent.
TABULATE sets TABULATE mode to ON and PLOT mode to OFF.
RETURN takes the user out of UNARY
back to the module level.
runs a macro taken from a file. The name of the file should be
entered in quotes. Commands can also be passed through to the
operating system by prefixing them with a $ (dollar sign). The
dollar sign and operating system command should be entered within
introduction gentle introduction to using
the options available in UNARY contains annotated
examples, each directed towards achieving a particular outcome,
showing typical combination of commands which would be necessary
to achieve that end.
summary of the commands
available can also be used as an index to obtain more detailed
help about each command.