Changes between Version 27 and Version 28 of Tutorial/AdvancedParticleImagingVelocimetry


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Timestamp:
Jan 30, 2015, 3:12:53 PM (6 years ago)
Author:
vaillant1p
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  • Tutorial/AdvancedParticleImagingVelocimetry

    v27 v28  
    2323The projected fields are written as netcdf files in the folder 'images.civ.mproj'. Those can be opened by '''uvmat'''. The list of 'variables' appear in a GUI '''get_field'''. Selecting the variables 'U', 'V', 'curl'... in the table variables, we can see their dimensions in the right hand column. They are structured as two-component arrays (y,x) unlike the raw PIV results. Select the plot option 'scalar' or 'vector', and the quantity to plot in '''uvmat''', as well as the variables used as coordinates, here 'coord_x' and 'coord_y'.
    2424
     25[[Image(Tutorial7 - merge proj.png)]]
     26
    2527== Turbulent  statistics ==
    2628From these files, basis turbulence statistics can be provided by the function ''turb_stat.m'' to be selected in the menu '''[Action]''' of '''series''': select the option 'more...' which gives access to a browser from which this function, located in the folder 'UVMAT/series' can be selected. Then run the calculation and visualise the different fields with '''uvmat''', after selection by '''get_field''': for instance the average of V gives the mean jet structure. The field UVmean clearly shows the structure of the Reynolds stress across the jet, positive on one side and negative on the other side, corresponding on the radial eddy diffusion of the jet.