> For the complete documentation index, see [llms.txt](https://docs.aviumtechnologies.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aviumtechnologies.com/user-guide/output-files.md). # Output files The APM Solver and Preprocessor can output files in **.csv**, **.vtu**, and **.dat** file formats. The **.csv** files can be opened with any text editor or data processing software such as [MATLAB](https://www.mathworks.com/products/matlab.html) or [RStudio](https://rstudio.com/). The **.vtu** files are specific to [ParaView](https://www.paraview.org/). ParaView is an open-source, multi-platform data analysis and visualization application which can be downloaded from . The **.dat** files are specific to [Tecplot](https://www.tecplot.com/). Tecplot is the name of a family of visualization & analysis software tools developed by Tecplot, Inc. To enable or disable ParaView or Tecplot output change the `paraview_output` and `tecplot_output` options in the **.conf** file. ![](/files/-MWGzl2rabRTFvnEzpbh) ## Output file descriptions | File | Description | | ---------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |

\\_body\_panels.vtu

\\_body\_panels.dat

| Files in **.vtu**, or **.dat** file formats which contain the source strengths, doublet strengths, reference velocities, relative velocities and the pressure coefficient of the body elements. Created by the APM Solver. | |

\\_wake\_panels.vtu

\\_wake\_panels.dat

| Files in **.vtu**, or **.dat** file formats which contain the doublet strengths of the wake elements. Created by the APM Solver. | | \.loads | File in space delimited file format which contains the integrated loads of the body. Created by the APM Solver. | | \.mdl | File in space delimited file format which contains the element types, vertices, and neighbours. Created by the APM preprocessor and used by the APM Solver. | | \.checkpoint | File in binary file format which contains the latest solution. Created by the APM Solver. | The structure of an example **.loads** file is shown below: ``` Timestep Time CFx CFy CFz CMx CMy CMz CL CD CC 0 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 1 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 2 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 3 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 0.0000000000 ... ```