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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.
Define sensors
The following procedure shows you how to define sensors for the thermal correlation analysis, modify their status and display the name, source, and temperature for one or more sensors.

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.
  - Import sensors reference data from a CSV file
    This procedure shows how to import reference data for a thermal correlation analysis from a CSV file that contains data for multiple sensors.
  - Define sensor reference data for a point
    This example shows how to create a sensor on a previously created named point using the Point command in Simcenter 3D, and define its reference data for the thermal correlation analysis.
  - Define sensors
    The following procedure shows you how to define sensors for the thermal correlation analysis, modify their status and display the name, source, and temperature for one or more sensors.
  - Sensors page
    The Sensors page lets you import, create and manage the sensors. It also displays additional information for the sensors imported from the Reference Data file when you select the Sensors node in the main panel.
  - Pair the reference data with the simulation model
    Use this procedure to pair the sensors from the reference data with the elements or nodes of your simulation model before performing a thermal correlation analysis.
  - Pairing page
    After importing the reference data, you must pair the sensors with the elements or nodes of your simulation model. The Pairing page lets you view created sensors, pair them using the selected pairing method, and unpair them when you select the Pairing node in the main panel.
  - Compare the reference and original temperatures before optimization
    The following procedure shows how to compare the reference temperatures and the original solution temperatures before performing the thermal correlation analysis.
  - Responses page
    The Responses page displays the difference between the sensor temperature in the reference data and the temperature results in the original solution with associated absolute errors and warnings before performing a thermal correlation analysis when you select the Responses node in the main panel.
  - Reference Data page
    The Reference Data page provides sensor information for the thermal correlation analysis when you select the Reference Data node in the main panel. This page automatically updates when you make changes on the Sensors or Pairing pages.
- 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

Define sensors

The following procedure shows you how to define sensors for the thermal correlation analysis, modify their status and display the name, source, and temperature for one or more sensors.

A created thermal correlation analysis associated to a solved solution. For more information, see Create a thermal correlation analysis.

In the TMG Correlation dialog box, select the Reference Data→Sensors node.
In the Create Sensors group, from the Source list, select the appropriate method to define your sensors.
In the same thermal correlation analysis, you can define sensors from multiple sources:
- A CSV file containing reference data for multiple sensors.
- Reference data for a single sensor defined as a named point or a user defined point.
For more information, see Import sensors reference data from a CSV file and Define sensor reference data for a point.
Repeat the procedure from the two previously mentioned pages until all your sensors are defined.
In the Sensors group, in the Sensors table, select a sensor.
In the Status column, double-click the status of the selected sensors to change it.

You can also right-click one or more sensors you want to change the status and choose Status→Activate or Status→Deactivate.

The icon indicates that the sensor is active. The icon indicates that the sensor is inactive.

Only the active sensors are available in the Pairing page to pair the reference data with your simulation model.
In the Sensors table, right-click one or more sensors you want to delete and choose Delete to remove a sensor with bad reference data from the thermal correlation analysis.
If a sensor is deleted in the Sensors page, the sensor is no longer available in the TMG Correlation interface.
In the Sensors group, in the sensor table, select one or more sensors, right-click the selection and choose Information.

The information for each selected sensors, such as the name, source, and temperature, is listed in the Information dialog box.
(Optional) To save the sensors information to a text or HTML file, in the Information dialog box, click Save As .