The Composition Calculator can help you to specify the initial (and boundary condition) composition information in Ansys Forte for in-cylinder, exhaust-port and inlet-port initialization. This utility is valid for any CxHyOzNw liquid or gaseous fuel composition, for rich or lean conditions, with and without EGR (internal and/or external EGR). In performing the calculations, complete combustion is assumed for the fuel/air combustion in-cylinder. The composition that is calculated includes:
The Composition Calculator can be accessed from the
Utility menu or the Composition Calculator
button on the toolbar. Once the fuel mass, fuel composition, air flow data,
and EGR data are provided in the dialog, the utility will calculate the initial (and boundary
condition) composition automatically and the results will be displayed in a table format, as
illustrated in Figure 2.11: Composition Calculator utility
. Click the Create Mixture
button to save the different sets of results as gas mixtures and use them when such composition
input is required. To save the current IVC session, click the Save
button. A saved session as an .ftivc file can be
loaded into the calculator using the Open
button.
