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afrotimy February 27, 2014 22:43

AirfoilCalculation Tutorial Error

I am trying to start up airfoil simulation in OpenFOAM with the airfoil calculation tutorial but having problem executing this command:

"To save you for a lot of typing, an Octave-script NACA2STL.m has been made. Download the script into a directory of your choice and make
it executable.:

Terminal window
chmod +x NACA2STL.m

These commands will create a STL-file of a NACA0015 airfoil with a chord length of 1 meter. You might need to edit the first line in the script (#!/usr/bin/octave -qf) if your Octave-binary is located in another location than /usr/bin. Put the file in the airfoil_snappyHexMesh/constant/triSurface directory.

Error message

xx@ubuntu:~/OpenFOAM/xx-2.3.0/run/tutorials/incompressible/pimpleDyMFoam/airfoil$ chmod +x NACA2STL.m
chmod: cannot access `NACA2STL.m': No such file or directory

xx@ubuntu:~/OpenFOAM/xx-2.3.0/run/tutorials/incompressible/pimpleDyMFoam/airfoil$ chmod +x NACA2STL.m
xx@ubuntu:~/OpenFOAM/xx-2.3.0/run/tutorials/incompressible/pimpleDyMFoam/airfoil$ ./NACA2STL.m
bash: ./NACA2STL.m: /usr/bin/octave: bad interpreter: No such file or directory

I have tried to place the NACA2STK.m file into the usr/bin but not permitted and can't fully still execute the command in any other directory. Can anyone help to throw more light on this procedure I think I am not getting a step right?

Many thanks.

afrotimy February 27, 2014 23:31

AirfoilCalculation Tutorial Error
Hi FOAMers,

Problem resolved.

I was able to figure out that Octave is a tool for reading and writing binary codes and that it is not installed in my usr/bin directory.

I just installed Octave via the link:

Now, my airfoil.stl file has been successfully created with the directory it was saved in.


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