[ciccio]

Hi
I'm new in using TecPlot and I need it for a university project.
I downloaded the mat2tecplot.m code but I couldn't manage by myself.
My problem is the following:
I have a cube represented by a matrix 36X36X36, and for each cell center I know exactly the velocity of that cell(vx,vy,vz). The velocity field is represented by 3 different matrix, one for vx (36X36X36) same size for vy, vz.
I tried to use the example 11, but when I load in Tecplot and I try to interpolate an error window appears and says that the interpolation can be done only for nodal value. How could I solve this problem?
Thank you, any help is really appreciated

[wenlong]

Hi ciccio

Cubes are simple, because you have 36x36x36 for the cubes vertex points and your u,v,w are on the center of each cube, that means you should supply u,v,w as 35x35x35 arrays instead.

Here is an example code

----------------------
tdata=[];

tdata.Nvar=6;
tdata.varnames={'x','y','z','u','v','w'};
tdata.cubes(1).zonename='my IJK volume cubes zone';

x=(1:1:36);
y=(1:1:36);
z=z(1:1:36);
[x3d,y3d,z3d]=meshgrid(x,y,z);
tdata.cubes(1).x=x3d;
tdata.cubes(1).y=y3d;
tdata.cubes(1).z=z3d;
u3d=repmat(random('norm',0.1,0.2,35),[1,1,35]);
v3d=repmat(random('norm',0.1,0.2,35),[1,1,35]);
w3d=repmat(random('norm',0.1,0.2,35),[1,1,35]);
tdata.cubes(1).v(1,:,:,: )=u3d;
tdata.cubes(1).v(2,:,:,: )=v3d;
tdata.cubes(1).v(3,:,:,: )=w3d;
tdata.cubes(1).varloc=1;
mat2tecplot(tdata,'mycube_IJK_volume_cellcenter.pl t')

------------------
Then you can view the plot in tecplot, and attached pic is what I got.



Wen

[chernac2000]

hello
I have a problem when I load data file in tecplot, the file is generate with matlab with mat2tecplot.m . I get this message: Binary file version newer than tecplot version. Upgrade Tecplot or use an older preplot to produce the data

[wenlong]

Open mat2tecplot.m in a text editor, search for "magic number"
which is the version number, change to earlier version

Wen

[chernac2000]

Hi wen,
I have a tecplot version 10, what is the earlier version of TDV that I will add it.
Thanks

[wenlong]

Try TDV010 or TDV100

[chernac2000]

I have another problem when I put TDV100 and TDV010. The TDV100 give error as : "out of space while allocating var names" and /invalid header in binary datafile" and "unable to read binary datafile header.

The TDV010 give error as: unexpected end of file in datafile header

[wenlong]

Oops, that means you would have to experiment a bit, the binary file format may have been changed from 10.0 to 11.0.
not sure what exactly your line of the magic number looks like unless you post it

also try "#!TDV101" which means 10.1 or "!TDV75 " for version 7.5 notice there is a space after 75

[chernac2000]

I've tested (TDV101 and TDV75 ), but they give the same error as TDV100. all older versions TDV105 give the same error

[scott_rumage]

I do believe you will need to upgrade your Tecplot license to the new version, as the option to use “Preplot” does not apply to the mat2tecplot.m application.

Preplot is used to convert Tecplot ASCII formatted data to Tecplot binary formatted data – which is not the situation for the use of mat2tecplot.m

Here is a link to the product page on Preplot (and TecIO) if you want to learn more about this application: http://www.tecplot.com/downloads/tecio-library/ . BTW – Preplot is already installed on your computer in the Tecplot 360 “bin” folder.

Contact Tecplot via the email -- sales at Tecplot dot com -- to get your license upgraded.

Scott

[scott_rumage]

Tecplot intern Devon Simpson has written a blog that provides a script and data showing how to use Wen Long’s Mat2Tecplot.m converter. The blog is located here: http://www.tecplot.com/blog/2014/07/28/create-tecplot-format-files-matlab-data/ .


Regards,
Scott

[Durrell4]

Hi nacera,

What version of Tecplot are you using?

Durrell

[lbmagis]

Hello,
Could any one tell us how to use this way to visualize isotherms and streamlines in 2Dimensions.
Thank you

[Durrell4]

Originally Posted by lbmagis

Hello,
Could any one tell us how to use this way to visualize isotherms and streamlines in 2Dimensions.
Thank you

One can add streamlines interactively via the streamtrace placement tool on the sidebar.


Isotherms can be produced via our contour groups and using a surface contour.

Check out some the videos on using Tecplot here http://www.tecplot.com/products/tecp...deo-tutorials/

Best

Durrell

[lbmagis]

Hello and thank you so much for your quick reply

what i am intresting in is how to put many contours on the same matlab's figure? like these below: look to one of these figures ,please let's choose the first one on the left, did you observe that on the first contour (dashed lines), there's another one but with (solid lines).

how can i make the same thing???
NB: no way to imagesc them at the same time on the matlab code, we obtain these contours one by one .... so i thinking about export them (2 contours or more) together to tecplot wishing make the necessary post-processing treatment
in order to get the same result
Thanks

[the_aviator]

i need help about processing a test data in matlab. after processing matlab, i have to transfer it to tecplot. Who can help me?

[wenlong]

I can if you describe your data and upload a mat file somewhere

[the_aviator]

my data is 240*216 matrix. My task is to transform it to a form which tecplot can read and can plot a graph or can simulate it.

[wenlong]

very easy, follow one of the 2D ij- examples in mat2tecplot

[the_aviator]

can you send me the link?