Changes between Version 2 and Version 3 of Tutorial/ComparaisonNumSolution

Timestamp:

Feb 19, 2015, 3:13:37 PM (10 years ago)

Author:

vaillant1p

Comment:

--

Tutorial/ComparaisonNumSolution

@@ -10 +10 @@
 
 == Synthetic Images ==
-In the folder 'AnalyticFlows', select one of the images from the 'a3b' series. It shows a diagonal uniform flow running from the bottom left corner to the top right one. '''[RUN]''' a PIV on the images series only using '''[CIV1]''', '''[FIX1]''' and '''[PATCH1]''' with the default parameters.
+In the folder '!AnalyticFlows', select one of the images from the 'a3b' series. It shows a diagonal uniform flow running from the bottom left corner to the top right one. '''[RUN]''' a PIV on the images series only using '''[CIV1]''', '''[FIX1]''' and '''[PATCH1]''' with the default parameters.
 Then '''[Open]''' one of the vector files (.civ) created. We need to substract the numerical solution to this image in order to keep only the errors between our calculation and the theorical one. Select the mall red square'''[SubField]''' under the '''[Input]''' table to open a second file in '''uvmat'''. Open the netcdf file of the synthetic solution 'a3b_sol_num.nc'. The GUI '''get_field''' pops up, select 'vectors' in the '''[!FieldOptions]''' table and 'U' and 'V' in the right and left tables under '''[Ordinate]'''. The '''[Coordinates]''' should still remain as 'X' and 'Y'. Click on '''[OK]'''. An 'ERROR' window pops up, select '''[OK]''' and close the GUI '''set_object]''' which automatically popped up.
 
@@ -23 +23 @@
 Once it is done, the GUI '''get_field''' pops up again. Keep '1D plot' in the '''[!FieldOptions]''' table and select 'UHisto' or 'Vhisto' in the '''[Ordinate]''' one. The '''[Coordinates]''' should change according to the input in the '''[Ordinate]''' ('U' if 'UHisto' is selected, same for 'V' and 'VHisto'). Select '''[OK]'''.
 
-A curve, close to a Gaussian, (gathering all the vectors from the difference between all the analytic and synthetic files of the series) appears in '''uvmat'''. On the right hand corner a table shows all the parameters of this curve. In the scroll bar '''[Field/get_field]''' it is possible to get back to the GUI '''get_field''' and change the '''[Ordinate]'''. You can also '''[Export]''' the curve '''[/in new figure]''' or '''[/on existing axis]'''.
+A curve, close to a Gaussian, (gathering all the vectors from the difference between all the analytic and synthetic files of the series) appears in '''uvmat'''. On the right hand corner a table shows all the parameters of this curve. In the scroll bar '''[Field/get_field]''' it is possible to get back to the GUI '''get_field''' and change the '''[Ordinate]'''. You can also '''[Export]''' the curve '''[in new figure]''' or '''[on existing axis]'''.
 
 This is useful to determine and optimize some PIV parameters. The figure below shows the RMS, !FirstCentile, !FirstDecile, !LastDecile and !LastCentile of PIV calculations with different '''[CorrBoxSize]'''.
@@ -38 +38 @@
 
 
-It is now possible to '''[Run]''' a '''[/PIV]''' on this serie and by following all the steps from part1 (Synthetic Images) to obtain the difference between the analytical and noise solution and the synthetic one. The curve is not as smooth as in part1, you can indeed notice the effect of noise in a PIV calculation.
+It is now possible to '''[Run]''' a '''[PIV]''' on this serie and by following all the steps from part1 (Synthetic Images) to obtain the difference between the analytical and noise solution and the synthetic one. The curve is not as smooth as in part1, you can indeed notice the effect of noise in a PIV calculation.