Aspen Touch Solutions ATM-123R Series Specifikace Strana 332

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7-18 Creating an ACM Model
7-18
Composition Page
The Composition page allows you to specify the mole fraction for
each component in the ACM Op streams. If you prefer to enter
the composition using a different composition basis, you can
open the Material Stream property view for the desired stream
and select the composition input based on mole fractions, mass
fractions, liquid volume fractions, molar flow, mass flow, or
liquid volume flow.
PF Specs Page
The PF Specs page allows you to activate and specify the
pressure and flow specification for each stream in the ACM Op.
7.2.9 Dynamics Tab
The Dynamics tab allows you to select the desired solver for the
ACM Op. HYSYS Dynamics uses either the steady state sparse
OOMF solver or the fixed step size implicit dynamic mode Euler
solver to solve the ACM Op. There are five pages on the
Dynamics tab:
•Options
•ACM Specs
•PF Specs
Stripcharts
Simulation Engine
Options Page
The Options page allows you to select the operating mode of the
HYSYS performs a T-P flash when information is transferred
from the ACM model to a HYSYS stream. This can cause
problems with narrow boiling streams where the
temperature does not define how much vapour or liquid is
present. You can avoid this problem by using multiple ports
to separate phases.
Refer to Section 12.2.1 -
Worksheet Tab in
Composition Page in
the HYSYS Operations
Guide for more
information on the choice
of composition basis.
Refer to Section 12.2.3 -
Dynamics Tab on Specs
Page in the HYSYS
Operations Guide for
more information.
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