[Dvergr]

Hi!

I am currently setting up some airfoil simulations at different angles of attack. For this I want to be able to easily rotate the U.internalField to simulate changing angles of attack. Obviously, I could just calculate the new U vector by hand, but it would more practical to automatically calculate the new internalField-vector based on a free stream velocity and an angle of attack.

So instead of

internalField	uniform (2 0 0);

I would prefer either importing the values from a different file

#include 	"freeStream"
internalField	uniform (uInfX uInfY 0);

or simply calculate the values in the U file itself. And perhaps even be able to define the angles of attack in the shell script which runs my case.

In any case I need to calculate the velocity components in C++ code. I have tried using the codeStream directive, but I keep getting errors. The simplest case I can setup is one without any actual calculations:

internalField	#codeStream
{
	code
	#{
		os << (0, 0, 0);
	#};
};

But this produces the following error:

Create time

Create mesh for time = 0

Reading field p

Reading field U

Using #codeStream at line 21 in file "/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U"
Using #codeStream with "/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/dynamicCode/platforms/linux64GccDPOpt/lib/libcodeStream_f4e00eed56f471723793acc5dad98c5aeb257006.so"
Creating new library in "dynamicCode/_f4e00eed56f471723793acc5dad98c5aeb257006/platforms/linux64GccDPOpt/lib/libcodeStream_f4e00eed56f471723793acc5dad98c5aeb257006.so"
Invoking "wmake -s libso /home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/dynamicCode/_f4e00eed56f471723793acc5dad98c5aeb257006"
wmakeLnInclude: linking include files to ./lnInclude
ln: failed to create symbolic link `./codeStreamTemplate.C': Read-only file system
Making dependency list for source file codeStreamTemplate.C
/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U.#codeStream: In function ‘void Foam::codeStream_f4e00eed56f471723793acc5dad98c5aeb257006(Foam::Ostream&, const Foam::dictionary&)’:
/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U.#codeStream:25:11: warning: left operand of comma operator has no effect [-Wunused-value]
/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U.#codeStream:25:14: warning: right operand of comma operator has no effect [-Wunused-value]
'/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/dynamicCode/_f4e00eed56f471723793acc5dad98c5aeb257006/../platforms/linux64GccDPOpt/lib/libcodeStream_f4e00eed56f471723793acc5dad98c5aeb257006.so' is up to date.
--> FOAM Warning : 
    From function Field<Type>::Field(const word& keyword, const dictionary&, const label)
    in file /home/opencfd/OpenFOAM/OpenFOAM-2.3.0/src/OpenFOAM/lnInclude/Field.C at line 318
    Reading "/home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U" from line 18 to line 46
    expected keyword 'uniform' or 'nonuniform', assuming deprecated Field format from Foam version 2.0.


--> FOAM FATAL IO ERROR: 
Expected a '(' while reading VectorSpace<Form, Cmpt, nCmpt>, found on line 0 the label 0

file: /home/mpedersen/Documents/internship/OpenFOAM/DU97/DU97_simpleFoam/0/U.internalField at line 0.

    From function Istream::readBegin(const char*)
    in file db/IOstreams/IOstreams/Istream.C at line 94.

FOAM exiting

It seems to be complaining about several things; a Read-only file system when using wmake, uniform/non-uniform problem (I don't know where to define this when using #codeStream), and an IO error.

Does anybody have an idea how to solve these errors, or any general tips on how to define a dynamic internalField?

I am very new to OpenFOAM and CFD in general, so any help would be much appreciated