Changes between Version 25 and Version 26 of Tutorial/AdvancedParticleImagingVelocimetry


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Timestamp:
Jan 30, 2015, 9:45:30 AM (6 years ago)
Author:
vaillant1p
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  • Tutorial/AdvancedParticleImagingVelocimetry

    v25 v26  
    1717To properly process data, a projection of the velocity fields on a grid is needed, preferentially in physical coordinates. Create this grid in the GUI '''uvmat''' by opening the velocity field determined earlier, then select '''[Projection object/plane]''' in the upper menu bar, and select '''[!ProjMode]'''='interp_tps' in the GUI '''set_object'''. A grid mesh of 0.05 cm is proposed, corresponding to the vector density. Adjust the min and max in each direction for instance x=[-1.5 1.3] and y=[0 2.9]. Press '''[REFRESH]''' to see the result of the projection/interpolation on the grid. Press '''[SAVE]''' to backup the content of the GUI '''set_object''' as an xml file.
    1818
     19[[Image(Tutorial7 - Civ on grid.png)]]
     20
    1921Now activate '''[Run/field series]''' in the upper menu bar of '''uvmat''' and select the '''[Action]''' function 'merge_proj'. Select the box '''[Projection Object]''' so that the plane in '''set_object''' is incorporated. If '''set_object''' has been closed, then open its backup as an xml file with the browser. Select the transform 'phys' in the menu '''[!FieldTransform]'''. Select the indices i from first_i=1 to last_i=99. In the menu '''[!FieldName]''' select simultaneously the options 'vec(U,V)', 'curl(U,V)', 'div(U,V)' (using the key 'Ctrl'). Note that the whole configuration of '''series''' can be retrieved by the menu bar command '''[Import Config]''', opening 'Images.ref.civ.mproj/0_XML/c_1-99.xml'. Press '''[RUN]''' to start the projection, preferably with '''[run mode]'''='background' to keep free the current Matlab session.
    2022