I am using TECPLOT to post-operate the FLUENT result, and want to get wall shear stress of special points. I had writen a MACRO to operate my work, but the result, the coordinate of points, are different to the value in the macro file. What is the reason? How to do correctly?

This is my macro file: #!MC 900

$!READDATASET '"-LoadOption" "GridAndSolution" "-CaseFile" "E:\unsteady.cas" "-GridZones" "BoundariesOnly" "-DataFile" "E:\unsteady.dat"'

DATASETREADER = 'Fluent Data Loader'

$!PICK SETMOUSEMODE

MOUSEMODE = SELECT

$!PICK SETMOUSEMODE

MOUSEMODE = SELECT

$!EXTRACTFROMPOLYLINE

EXTRACTTHROUGHVOLUME = NO

EXTRACTLINEPOINTSONLY = YES

INCLUDEDISTANCEVAR = NO

NUMPTS = 20

EXTRACTTOFILE = YES

FNAME = 'E:\Jwt\FlowChamber\Bifurcation\WSS_P_C&N\WSS-P-C&N_|F1|.dat'

RAWDATA

6

3.69074582597831E-03 5.2885748683387E-03 0

6.13156673884702E-03 6.65591994596276E-03 0

8.71635654747554E-03 7.86122722844724E-03 0

1.13471443689967E-02 8.82118695579832E-03 0

1.42134653175816E-02 9.56945325846278E-03 0

1.70509637007159E-02 1.03795297522031E-02 0

$!PICK SETMOUSEMODE

MOUSEMODE = SELECT

The result as follow: VARIABLES = "X" "Y" "Z" "Pressure" "X Velocity" "Y Velocity" "Z Velocity" "Mass Flux" "Mass Flux M1" "Variable #114-1" "Variable #114-2" "Variable #114-3" "Wall shear-1" "Wall shear-2" "Wall shear-3" "Boundary heat flux" "Boundary rad heat flux" "Density" "Density t-1" ZONE

0.0132126529555 0.00875424914337 0.00170419006373 .......(omited)

0.00828271565594 0.0072761538821 0.00153740363191 .......(omited)

0.00128266168341 0.00393154471282 0.00108209568066 .......(omited)

-0.00341266672621 0.00295671212011 0.000888105272212 .......(omited)

-0.00742063295438 0.00300233585155 0.000766922960434 .......(omited)

-0.0114099025797 0.00302589492282 0.000656996585406 .......(omited)

[Vian]

Hi,

I am facing the exact same problem: how to use the "probe" tool to extract data from a point through a macro, without having to manually click on the point.

It seems that the coordinates that need to be input in the macro after RAWDATA have to be in some odd 2D coordinate system. I couldn't find any information on how to switch from that system to the physical coordinates.

Any help welcome!

[scott_rumage]

Vian,

If you are using Tecplot 360 2008 R2 or later, you will find a python example script called probe.py and located on your computer at ...tecplot\tec360 \examples\python

Perhaps you would be able to edit this script to probe your data via batch mode (or script).

Scott

[Vian]

Scott, thanks for your quick answer.

I didn't want to look into Python scripting (was using Tecplot's funky macro language) but I guess I'll have to ; the example seems indeed to be promising!

[aeroiitkgp]

Thank you scott_rumage for the info.

I tried to use this script to extract values in a given 3D dataset. It works well except for some points when its giving the error " no such point in dataset".

If I try to enter the same point through the probe at tool in gui, I observe that tec360 approximates that point to the nearest available point and gives a result, but the python script is not able to do that.

How do I modify the script to allow it to find nearest possible point in data?