Thermodynamic and Related Quantities Examples

This example shows how to plot thermodynamic functions in unary, binary, and ternary systems. It also involves working with partial derivatives and partial quantities.

This uses the SSOL database. A license is required to run the example.

These commands are used and may be of interest:

This example calculates an Al-Ti binary phase diagram and G curve using the BINARY module. The TCBIN database is used and included with your installation.

This example calculates the heat and heat capacity variations during solidification of an Al-Mg-Si alloy. The ALDEMO database is used and included with your installation.

These commands are of note and used in this example:

• LIST_SYSTEM
• LIST_CONDITIONS
• SET_AXIS_TEXT_STATUS

This example calculates the A3 temperature of a steel and examines the influence of each alloying element on this temperature.

A3 temperature is the temperature where ferrite starts to form from austenite. You can easily read A3 from an Fe-C phase diagram. However, for complex multicomponent steels no simple diagram can be used. Using POLY, it is easy to find out the influence of each alloying element on the A3 temperature. This information is useful if you want to modify the compositions of a steel but keep A3 unchanged.

This uses the TCFE database. A license is required to run the example.

These commands are of note and used in this example:

• DEFINE_ELEMENTS
• AMEND_PHASE_DESCRIPTION
• COMPUTE_TRANSITION
• DEFINE_MATERIAL
• ENTER_SYMBOL
• SHOW_VALUE

This example examines a heat balance when C₃H₈ is burned in oxygen by calculating the adiabatic flame temperature.

This uses the SSUB database. A license is required to run the example.

This is an example of plotting the partial pressures of a gas species along the solubility lines in the As-Ga phase diagram. The calculation makes it possible to monitor the input gases to a process of depositing solid As-Ga. The data is taken from the PG35 Binary Semi-Conductors database.

These commands are of note and used in this example:

• REJECT
• RESTORE
• SET_DIAGRAM_AXIS
• SET_SCALING_STATUS
• SET_AXIS_TEXT_STATUS
• SET_LABEL_CURVE_OPTION

This example uses the BINARY module to calculate the phase diagram and G curves in the Al-Zn system. It uses the TCBIN database included with your installation.

This example shows how to calculate the reversible Carnot cycle of a heat engine using one mole of an ideal gas with two fictitious species A and A2. The GES, POLY3, and POST modules are used, as well as the SUBDEMO database, which is included with your installation.

One application of the Second Law is to the efficiencies of heat engines, pumps and refrigerators. Whenever there is a difference of temperature, work can be produced - the principle of heat engines. The Gibbs energy also enables the prediction of the maximum work that a process may achieve. The goal of this example is to help relate the results to different thermodynamic quantities. 

These commands are of note and used in this example:

• REINITIATE
• ENTER_PARAMETER
• ENTER_SPECIES
• SET_PLOT_FORMAT
• ENTER_PHASE

This example uses the POLY3 module to calculate the molar volume, thermal expansivity and density of the FCC_A1, BCC_A2 LIQUID, and liquid phases of C-Fe. The FEDMO database is used and this example is available to all users.