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Updating the simulation model
After you verified the optimization results, you must update the simulation model to reflect any changes that were made during the thermal correlation analysis so that you can continue your modeling in Simcenter 3D.

User help
- Introduction to TMG Correlation
- TMG Correlation workflow
- TMG Correlation interface
  The TMG Correlation user interface is integrated in Simcenter 3D using NX Open and contains unique features to conduct a thermal correlation analysis, in addition to standard tools and commands described in the Simcenter 3D Online help and the NX Online help.
- Thermal correlation analysis preparation
  Before conducting a thermal correlation analysis, it is important to properly prepare your simulation model and the reference data.
- Understanding thermal correlation analysis
  The thermal correlation is a calibration process that helps you find the best thermal solution that minimizes the error between the computed and target temperatures at different locations and times.
- Managing the reference data
  In TMG Correlation, reference data refers to the temperature and time data that come from experimental tests or from prior and validated simulation models. They are named sensors and are used as targets for the optimization of the correlated solution.
- Understanding design variables
  A design variable is a simulation entity of your model that the TMG Correlation solver varies within a specific range during the optimization to reduce the gap between the reference data and the simulation results.
- Setting up the optimization
  In optimization, the goal is to find values for the design variables that minimize the difference between the reference data and the correlated solution results.
- Monitoring the optimization
  Use the Solution Monitor and Solution Control Monitor to track the analysis during the solve. The monitors provide solver-specific information for the TMG thermal solver and the thermal correlation analysis.
- Analyzing the optimization results
  After you solve a thermal correlation analysis, you can analyze the results of the optimization process in the TMG Correlation dialog box.
- Updating the simulation model
  After you verified the optimization results, you must update the simulation model to reflect any changes that were made during the thermal correlation analysis so that you can continue your modeling in Simcenter 3D.
  - Update the correlated solution
    The following procedure shows how to update and save a new simulation model that has the optimized design variable values applied to the related parameters or expressions.
  - Model Update page
    The Model Update page lets you update the simulation model, which is saved to a new location, with the optimization results when you select the Model Update node in the main panel.
- Theory
- Legal notice
- License agreement

Updating the simulation model

After you verified the optimization results, you must update the simulation model to reflect any changes that were made during the thermal correlation analysis so that you can continue your modeling in Simcenter 3D.

When you update the thermal correlation analysis, TMG Correlation creates a new Simulation file, whose filename is prepended with 'correlated_' in native Simcenter 3D, that includes:

Modified simulation objects where the parameters and expressions promoted to design variables are replaced by the optimized design variable final values.
The original solution, which now points to modified simulation objects.
The calibrated solution ready to be solved and worked on.

TMG Correlation does not modify the original model. You can also request to copy the FEM, part, and idealized part files at the same time.

After you update your thermal correlation analysis in TMG Correlation, both the original and correlated Simulation files are open in separate tabbed windows in Simcenter 3D, with the original Simulation file displayed.