![]() In order to use them, a dataset has to be selected from the Pipeline Browser to act as the input of the filter. ![]() A selection of common filters is available as buttons right above the Pipeline Browser. ParaView can manipulate the fields in many different ways to allow us to see things more clearly. You should feel free to explore all controls. It is possible to rescale according to the current frame data, a custom range, all data, or the visible data. On the left of the menu we used to select the field by which to colour our domain, you can see various buttons to set the scale and the colour map. For example, in the Rigid Walled Room episode they were just different steady state solutions at different frequencies, but ParaView will still cycle through them, treating them as frames of an animation. Not always the files are grouped by time. These allow you to cycle through all the case files. On the top of the window you can see some play/stop/rewind style of controls. In this case, whenever ParaView recognises a series, it interprets it as time series. You will probably remember from the Rigid Walled Room episode that when there are many files called in a similar fashion to case0001.vtu, case0002.vtu, case0003.vtu … ParaView will group them all together when selecting which file to open, and you will be able to load them all at once. As you remember from the previous episodes, pressure wave 1 and pressure wave 2 are the real and imaginary part, respectively, of the complex steady state pressure field output by Elmer Helmholtz solver.Ī simple way to colour your domain by any of these datasets is by selecting it in the menu in the toolbar as follows: Figure 3.1 For example, the file I loaded above contains two arrays of data, pressure wave 1 and pressure wave 2, together with GeometryIds which normally we do not directly use. Your vtu file probably contains more than one single dataset. Pan your view by holding the mouse middle button and panning around.Zoom in and out by using the mouse wheel or by holding the right mouse button and panning around.Rotate your point of view by holding the left button and panning around with the mouse.We can see that ParaView opened a default view on our data, looking at it from above, and that our domain does not seem very interestingly coloured. If you click you will load all the data of the vtu file into ParaView.įor example, below I loaded the Elmer file from the Rigid Walled Room episode. On the left, in the Properties browser, you will see that the Apply button is highlighted.In order to load a vtu file, we can act as follows: Upon boot, ParaView will look something like this: Figure 1 These files can be imported into ParaView. Normally, Elmer will provide us with *.vtu files. This page will be updated throughout the series. In this page I will merely collect a few useful tips and tricks that I found useful when working on my studies. For that, you should instead refer to this page. ParaView functionalities are so many, and so advanced, that it is impossible to cover them all in a blog post. It also allows to export data in various formats, such as CSV, that allow us to do any additional kind of postprocessing or verification, by either using Julia, Python or any other language, or even spreadsheet software if you fancy that (for whatever reason…). It is by far the best option to visualise and postprocess results from Elmer. ParaView can do all sorts of cool visualisations and animations, as well as providing the way of doing quantitative analysis. In the previous episodes we often made use of the ParaView postprocessor to visualise our solution field from the Elmer solver.
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