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PLOT3D files with Tecplot 2012

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Old   March 13, 2013, 17:37
Default PLOT3D files with Tecplot 2012
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Nikolaos Beratlis
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I am having problems reading solution files of PLOT3D format into Tecplot 2012. Here are two small test files I am using, one is the grid:

1
3 2 2
0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0
0.0 0.0 0.0 1.0 1.0 1.0 0.0 0.0 0.0 1.0 1.0 1.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

and the other one is the solution:

1
3 2 2
0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0

The domain is basically one block of size 3x2x2 and the files are ASCII formatted. I can read the grid file into Tecplot (see attached image) but when I try to read to solution file I get the following error:

File "sol.xyz" is not a solution file.

I was able to read PLOT3D files into Tecplot 2008, so I am very puzzled why I can't read them into Tecplot 2012. Is there something wrong with the solution file itself or a problem with Tecplot 2012.

Thank you,

Nikos
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File Type: jpg grid.jpg (15.5 KB, 28 views)
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Old   March 13, 2013, 23:08
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Nikolaos Beratlis
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When I add an extra line to solution file containing values for the Mach number, angle of attack, Reynolds number and time:

1
3 2 2
1.0 0.0 100.0 0.0
0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0

I don't get the previous error message but when it tries to load the file Tecplot crashes.
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Old   March 18, 2013, 14:36
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Straton Spyropoulos
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In previous versions of Tecplot we read function and solution files in the same place. Now we have split this into 2 distinct categories for function and for solution. If you open your file in the function section (instead of solution) it will work.


What you are calling a solution file is actually a function file. A solution file always has the variables, RHO, RHO-U, RHO-V, RHO-W, and E.



Regards, Straton at Tecplot
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Old   April 20, 2018, 15:35
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Nikolaos Beratlis
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I am having trouble reading binary files in Tecplot. I have the following Fortran code to create PLOT3D test files

PROGRAM MAIN
c
IMPLICIT NONE
c
integer nx,ny,nz

integer i,j,k,m,n,nblocks
real, dimension(, allocatable :: x,y,z
real, dimension(:,:,, allocatable :: var

nx = 3
ny = 2
nz = 2

ALLOCATE(x(nx),y(ny),z(nz),var(nx,ny,nz))

do i=1,nx
do j=1,ny
do k=1,nz
x(i) = i
y(j) = j
z(k) = k
var(i,j,k) = i*j*k
enddo
enddo
enddo

open (unit=7, form='unformatted', file='3Dbin.x' )
write(7) 1
write(7) nx,ny,nz
write(7)
& (((x(i), i=1,nx), j=1,ny), k=1,nz),
& (((y(j), i=1,nx), j=1,ny), k=1,nz),
& (((z(k), i=1,nx), j=1,ny), k=1,nz)
close(7)

open(120,form='formatted', file='3Dascii.x')
write(120,*) 1
write(120,*) nx,ny,nz
write(120,*) (((x(i),i=1,nx),j=1,ny),k=1,nz)
& , (((y(j),i=1,nx),j=1,ny),k=1,nz)
& , (((z(k),i=1,nx),j=1,ny),k=1,nz)
close(120)

OPEN(19,form='unformatted', file='3Dbin.f')
WRITE(19) NX,NY,NZ,1
DO K=1,NZ
WRITE(19) ((VAR(I,J,K),I=1,NX),J=1,NY)
ENDDO
CLOSE(19)

OPEN(19,form='formatted', file='3Dascii.f')
WRITE(19,*) NX,NY,NZ,1
DO K=1,NZ
WRITE(19,*) ((VAR(I,J,K),I=1,NX),J=1,NY)
ENDDO
CLOSE(19)

DEALLOCATE(x,y,z,var)

END


It creates grid and function files and it writes them to a file. One set of files are ASCII formatted and the other set is BINARY formatted. I can read the ASCII formatted files but I can't read the BINARY formatted files. Tecplot crashes. I am using TECPLOT 2015 R2. What is the problem?
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Old   April 24, 2018, 15:12
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John Connell
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Hello Nikos,

I was able to load your binary files for Tecplot 360 EX 2017 R2 and later. It looks like there was a bug in the Plot3D loader that has now been fixed. Please let us know if you have any more issues.

Regards, John C. at Tecplot
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