Did you know how easy to connect comsol multiphysics and matlab. Nov 15, 2018 how to export a 3d results plot from comsol multiphysics as of comsol multiphysics version 5. Save spectrum data shown in spectrum analyzer matlab. Livelink for matlab updates for users of livelink for matlab, comsol multiphysics version 5. We also share how you can extract data from comsol multiphysics models and plot results in matlab. Import text data from comsol matlab answers matlab central. Fyi, if your just importing geometry into comsol, its a lot easier just to do it with a cad program like solidworks. Export log simulation data as a baseline for analyzing and debugging a model.
Hello, i am having a similar experience as pierre guilleme linked above, but with an acoustics model. I am trying to import some data from comsol that defines the displacement of the surface of a cylinder at each point in time t, and its point along the xaxis. Pesch, you export the data from comsol by deselecting the include header. This matlab function returns the spectrum and spectrogram displayed on the spectrum analyzer along with additional statistics about the spectrum. First, export the mesh from comsol as a mphtxt file in the matlab working folder then, you can run the following function ive tested for a 2d triangular mesh. Im trying to export stl file of a tesselated mouse atlas so i can work on it in comsol. How can i import matlab script in comsol multiphysics. I am using comsol 5, i have done some simulation related to the near field scattering now when i have exported data from the comsol and put it into the matlab and tried to plot it as image as in. Export comsol fem mesh to matlab showing 17 of 7 messages. Anyway, you can also export the fem structure file export fem and view the variable within the matlab workspace.
Mar 06, 2009 importing stuff into comsol is all about formatting. Use standard or custom matlab functions to generate simulated system input signals and to graph, analyze, or otherwise postprocess the system outputs. How do i save that plot using only the command line and not the gui. Extracting data file from comsol tutorial 8 youtube. Supported data formats vary between different logging techniques. Livelink for matlab allows you to utilize the full power of matlab and its toolboxes in preprocessing, model manipulation, and postprocessing. Can we make the same image in matlab as we made it in comsol. Below your result menu you have a node export where you can obtain txt file from your data. Extracting data file from comsol tutorial 8 pioneer of success. However, when i extracted data in the results of comsol, the data just was arranged x, y, z, and electric fields. How to convert comsol femcfd results into vtk or other formats for external visualisation.
Can we make the same image in matlab as we made it in comsol by exporting the data. Livelink for excel updates for users of livelink for excel, comsol multiphysics version 5. Jun 27, 2009 i would like to generate a mesh in comsol products like i can do with initmesh in the partial differential equation toolbox and export the data into matlab. Now id like to export the velocity magnitudes from a constant x value and varying y value. The comsol software exports glbfiles that can be used to easily open and manipulate the geometry in other tools. Using the same format of the file you exported just copy and paste your matlab data into it.
Integrate matlab code with comsol multiphysics models. How to import results data into comsol multiphysics. I suppose that it could be done through the matlab interface or through the comsol. In a previous blog post, we looked at setting up a programmatic sequence of operations under the study node for solving, saving a model to file, and exporting data to file. About livelink for matlab livelink for matlab connects comsol multiphysics to the matlab scripting environment. Set up models from a script livelink for matlab includes the comsol api java, with all necessary functions and methods to implement models from scratch. How can i export mesh plot data out of comsol products. There is certainly a simpler way but you can export data from your graphs not from the group of graph but from each graph of the group by doing a right click. Just finished this after a couple of frustrating days working with comsol, where eventually i realized i couldnt get my model working and, to make it worse, i couldnt even find a way to export the geometry data to try another program. When a simulation has numerous data points, you can compare your results with reference or experimental data directly within the comsol multiphysics graphical user interface. The comsol multiphysics software has support for exporting results in many different formats.
How to export images automatically after solving your model. Different file formats for exporting simulation results. Ive having issues with the being able to properly export plot data with sufficient resolution. How can i export mesh plot data out of comsol products into. This section explains how to send data from a simulink model to the matlab workspace so you can. Exports various 2d3d data to paraview in vtk file format. Users of comsol multiphysics software can now export technical datasheets from matwebs collection in the comsol material library format. These tutorials were created to get you going with comsol 4. Exporting logging simulation data provides a baseline for analyzing and debugging a model. A complete list of premium features and membership options is available here. How do i access the plot data in that struct object. You can use many formats for logged data, including dataset, matlab timeseries, arrays, and structures. So, i want to extract data of surface electric field to matlab in x by y matrix, and want to handle these data.
Use matlab as a scripting tool to set up and solve your comsol models. Nov 03, 2008 im solving a system of 6 odes time dependant and wish to export them to a set or 1 of ascii files that can be imported to origin the format being the variable against the time. For your purpose, there is an export data node available for the results section. Automation of comsol multiphysics parameter studies using the matlab livelink dominik kerna, nilshenning framke b september 26, 2012 abstract comsol multiphysics is a finite element methods fem software package for the. After that, using the dlmread command to read the modified text file. Jun 10, 2016 normally, to export these data into matlab, i must do it manually. Learn more about comsol, matlab, get results at some points. You can import several different types of geometry files in comsol multiphysics, depending on the addon modules you hold a license for. Comsol livelink for matlab recorded webinar youtube. Dec 11, 2011 ive having issues with the being able to properly export plot data with sufficient resolution. Select surface from the space dimension list in the data nodes settings window and add a selection to the solution data set rightclick and choose add selection that is the surfaces that you want to export. Save data from the last spectrum shown on the spectrum analyzer to a table.
When i export from comsol into excel, the data is displayed with a column of 5000 entries for t0, with the corresponding displacement and xaxis value in the adjacent two columns. I would like to generate a mesh in comsol products like i can do with initmesh in the partial differential equation toolbox and export the data into matlab. The aim is to show basic principles, how to use the tools, how to extract data and so on. In comsol multiphysics, you can import mesh and interpolation data created by other software for use in your simulations. However, in comsol desktop, i can only see the result of the last calculation. Normally, to export these data into matlab, i must do it manually. In this video, we import data from outside of the software into tables and then create and customize graphical results. I just cant find a way to do it and the help section was no help at all. How to convert comsol femcfd results into vtk or other. Say i want to export temperature along a boundary, or more complex. How to store and export all loop solution from matlab to comsol. Starting comsol with matlab on windows mac osx linux.
Apr 26, 2016 there is certainly a simpler way but you can export data from your graphs not from the group of graph but from each graph of the group by doing a right click. I am using comsol with matlab to do some loop simulation. You can read popular file formats, such as microsoft excel spreadsheets, text, images, audio and video, and scientific data formats. Watch our recorded webinar to get an 18minute introduction to livelink for matlab, an addon product to comsol multiphysics. Webinar the basics of livelink for matlab with comsol in 18 minutes. For users of livelink for matlab, comsol multiphysics software version 5.
Jan 18, 2011 saving comsol model from matlab livelink. For users of livelink for matlab as an addon to the comsol server product, there is a new. Output comsol result from matlab matlab answers matlab. This movie describes how export data from comsol 4. There you will be able to select the different native and userderived variable if any as export data. Matlab livelink data from mphplot comsol multiphysics. Main line path stations with name and number distance of each. I wish to export the imaginary component of acoustic pressure along a cut line to matlab and am finding some sort of jitter supplementary points as pierre calls them in my matlab data. Enhance your inhouse matlab code with powerful multiphysics. Can we make the same image in matlab as we made it in.
Nov 23, 2017 did you know how easy to connect comsol multiphysics and matlab. Dec 28, 2011 these tutorials were created to get you going with comsol 4. Any suggestions about regular grid data from comsol. In comsol, is there a way to get it to export a txt file with all the eigenfrequencies found during an eigenfrequency analysis. Seamlessly integrate comsol multiphysics with matlab to extend your modeling with scripting programming in the matlab environment. This kml file contains data about the tsukuba express. How to import a geometry into comsol multiphysics youtube.
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