gPROMS System Programmer Guide

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This manual describes several advanced features of the gPROMS package. These in-
clude:
 The gPROMS Foreign Object Interface (see chapter 2).
Foreign Objects are external software components that provide certain compu-
tational services to gPROMS MODELs. These include physical property packages,
external unit operation modules, or even complete computational
uid dynam-
ics (CFD) software packages. This chapter explains how to make use of foreign
objects that are already interfaced to gPROMS; and also how to develop and
interface your own foreign objects.
 The gPROMS Physical Property Interface (see chapter 3).
Physical property packages form a special type of foreign objects (see above) that
are encountered very frequently in practice. The gPROMS Physical Property
Interface (PPI) de nes a standard set of physical property facilities that should be
supported by all physical property packages interfaced to gPROMS. Some widely
used physical property packages are already interfaced to gPROMS; details on
how to use them are also provided in this chapter. Finally, the PPI provides
a particularly convenient way of interfacing new physical property packages to
gPROMS.
 The gPROMS Foreign Process Interface (see chapter 4).
The Foreign Process Interface (FPI) allows gPROMS simulations to interact with
external software such as distributed control systems and operator training pack-
ages in order to exchange data and other information. The interaction takes the
form of a special set of elementary actions within the gPROMS TASK language.
FPI is particularly useful for embedding gPROMS simulations within larger soft-
ware systems.