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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.
Create a thermal correlation analysis
This procedure shows how to create a thermal correlation analysis in Simcenter 3D using TMG Correlation.

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.
  - Create a thermal correlation analysis
    This procedure shows how to create a thermal correlation analysis in Simcenter 3D using TMG Correlation.
  - New Analysis page
    The New Analysis page lets you create a thermal correlation analysis when you select the New Analysis node in the main panel. You can create multiple correlation analyses from any supported solution in the displayed simulation file.
  - Analysis page
    The <analysis name> page displays information about the thermal correlation analysis and allows you to delete a thermal correlation analysis when you select the <analysis name> node in the main panel.
- 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.
- Theory
- Legal notice
- License agreement

Create a thermal correlation analysis

This procedure shows how to create a thermal correlation analysis in Simcenter 3D using TMG Correlation.

A solved original solution. For supported solutions, see Supported Simcenter 3D solvers and solutions.

Choose Menu→TMG Correlation→Correlation.
In the TMG Correlation dialog box, select the New Analysis node.
In the New Analysis group, in the Name box, type a unique name for the thermal correlation analysis.
(Optional) In the Description box, type a description for your analysis.

This description appears on the Analysis page to help you differentiate between existing analyses.
In the Original Solution group, select one of the supported solutions, which are included in the Simulation file.

Only the Simcenter 3D solutions that support the thermal correlation analysis are listed.
Click Create.

Warning:
You should not alter the original solution after creating a thermal correlation analysis. This desynchronizes the original solution and the thermal correlation analysis.

After creating the thermal correlation analysis, you can import or create sensors as a reference data and pair them to the correlated solution on the Reference Data node. For more information, see Import sensors reference data from a CSV file and Define sensor reference data for a point.