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Exporting Data from COMSOL Multiphysics for External Analysis

Exporting Data from COMSOL - COMSOL Multiphysics is a robust simulation tool used in various scientific and engineering applications. A YouTube tutorial titled "How to Export results data from COMSOL Multiphysics" provides a detailed guide on exporting simulation data for use in other software like MATLAB, Origin, or Excel. This blog post summarizes the essential steps from the video, offering a clear, step-by-step guide for users looking to utilize their COMSOL data in different analysis and plotting tools.

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Exporting Data to Clipboard for Excel

Copying Data to Clipboard

  1. Right-Click on the Graph: In the COMSOL interface, right-click on the graph you wish to export.
  2. Copy Plot Data to Clipboard: Select 'Copy Plot Data to Clipboard'.

Pasting and Formatting in Excel

  1. Paste in Excel: Open Excel (or any similar tool) and paste the copied data.
  2. Separating Data into Columns:
    • Go to the 'Data' tab.
    • With the column selected, click 'Text to Columns'.
    • Choose 'Delimited', then select 'Space' and proceed to finish the process.
  3. Result: Your X and Y data will be separated into different columns.

Exporting Data as a Text File

Using Plot Data to Export

  1. Add Plot Data to Export: In COMSOL, click on the plot and select 'Add Plot Data to Export'.
  2. Setting Export Options:
    • Choose the format (e.g., Text file).
    • If you have multiple curves, select 'Append as Columns' for organized data.
  3. Saving the File: Choose a destination and file name (e.g., 'demo.txt').

Exporting the File

  • Click on 'Export' in COMSOL to save the file.

Importing Exported Data into Excel

Processing the Exported File

  1. Open the Text File: Locate and open the .txt file (e.g., 'demo.txt') containing the exported data.
  2. Copying Data to Excel: Select and copy the data from the text file.
  3. Pasting in Excel:
    • Paste the data into a new Excel sheet.
    • Excel will automatically separate the data into columns.
  4. Creating Plots: Select the relevant columns in Excel to create plots corresponding to the COMSOL data.


This tutorial offers an efficient and straightforward method for exporting simulation data from COMSOL Multiphysics into formats suitable for further analysis or presentation in other software. By following these steps, users can effectively utilize their simulation results in a wide range of applications beyond COMSOL's scope.

In summary, exporting data from COMSOL Multiphysics is a valuable skill for researchers and engineers who wish to analyze their simulation results using different tools or present their data in various formats.

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