[oswald]

I am trying to use a coded function1 for the position of an injector in a particle simulation. Does anybody have an idea how I can access the object registry from there?

[alundilong]

Originally Posted by oswald

I am trying to use a coded function1 for the position of an injector in a particle simulation. Does anybody have an idea how I can access the object registry from there?

something like this?

this->db().objectRegistry::template lookupObject<surfaceScalarField>

[oswald]

Thanks, but unfortunately not. It seems like the function1 has not builtin functionalities like this. Here is my line of code with your suggestion:

const scalar velh = this->db().objectRegistry::template lookupObject<scalar>("Hs");

And this is the error I get:

In file included from codedFunction1Template.C:26:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position: In member function ‘virtual Foam::vector Foam::Function1s::linIntRampFunction1vector::value(Foam::scalar) const’:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:47: error: ‘const class Foam::Function1s::linIntRampFunction1vector’ has no member named ‘db’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:52: error: request for member ‘objectRegistry’ in non-class type ‘<type error>’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:96: error: expected primary-expression before ‘>’ token
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:34: warning: unused variable ‘velh’ [-Wunused-variable]
make: *** [/opt/openfoam10/wmake/rules/General/transform:26: Make/linux64GccDPInt32Opt/codedFunction1Template.o] Error 1

[olesen]

Originally Posted by oswald

Thanks, but unfortunately not. It seems like the function1 has not builtin functionalities like this. Here is my line of code with your suggestion:

const scalar velh = this->db().objectRegistry::template lookupObject<scalar>("Hs");

And this is the error I get:

In file included from codedFunction1Template.C:26:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position: In member function ‘virtual Foam::vector Foam::Function1s::linIntRampFunction1vector::value(Foam::scalar) const’:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:47: error: ‘const class Foam::Function1s::linIntRampFunction1vector’ has no member named ‘db’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:52: error: request for member ‘objectRegistry’ in non-class type ‘<type error>’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:96: error: expected primary-expression before ‘>’ token
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:34: warning: unused variable ‘velh’ [-Wunused-variable]
make: *** [/opt/openfoam10/wmake/rules/General/transform:26: Make/linux64GccDPInt32Opt/codedFunction1Template.o] Error 1

It doesn't help you with the openfoam.org versions, but if you (or someone else) is using the openfoam.com version it will generally work with obr() access. Here is a link:


https://www.openfoam.com/documentati...e.html#details

[oswald]

Thank you, but as you might have guessed from the output I'm using the org-versions for this project.

[alundilong]

Originally Posted by oswald

Thank you, but as you might have guessed from the output I'm using the org-versions for this project.

can you share what you are trying to do and a snippet of your code?
It might help to develop a working solution for you.

[oswald]

Of course. Here is a snippet from inside the cloudProperties file. It is inside the injection model:

            position    // position of the injector
            {
                type        coded;
                name        linIntRamp;

                libs        ();

                codeInclude
                #{
                #};

                code
                #{
                    const vector startPos(-0.0005, -0.001, 0.003);  // initial location of the injector
                    const vector vel(0, 0, 0.01);                   // velocity of the injector
                    const scalar startTime = 0.0;                   // starting time of injector

                    return startPos + vel*(max(x-startTime,0.0));
                #};
            }

The injector should move with a velocity that is given within another dictionary outside of this scope.

[alundilong]

Originally Posted by oswald

Of course. Here is a snippet from inside the cloudProperties file. It is inside the injection model:

            position    // position of the injector
            {
                type        coded;
                name        linIntRamp;

                libs        ();

                codeInclude
                #{
                #};

                code
                #{
                    const vector startPos(-0.0005, -0.001, 0.003);  // initial location of the injector
                    const vector vel(0, 0, 0.01);                   // velocity of the injector
                    const scalar startTime = 0.0;                   // starting time of injector

                    return startPos + vel*(max(x-startTime,0.0));
                #};
            }

The injector should move with a velocity that is given within another dictionary outside of this scope.

oswald,

I'd recommend write a new InjectionModel where the customized position varying injector applied. In the InjectionModel(btw, I am referring to OpenFOAM v11), you have access to mesh through which you can do what ever needed.

In file included from codedFunction1Template.C:26:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position: In member function ‘virtual Foam::vector Foam::Function1s::linIntRampFunction1vector::value(Foam::scalar) const’:
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:47: error: ‘const class Foam::Function1s::linIntRampFunction1vector’ has no member named ‘db’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:52: error: request for member ‘objectRegistry’ in non-class type ‘<type error>’
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:96: error: expected primary-expression before ‘>’ token
/home/user/OpenFOAM/user-10/run/plate2d/constant/cloudProperties/subModels/injectionModels/model1/position:102:34: warning: unused variable ‘velh’ [-Wunused-variable]
make: *** [/opt/openfoam10/wmake/rules/General/transform:26: Make/linux64GccDPInt32Opt/codedFunction1Template.o] Error 1

Regarding Function1s::linIntRampFunction1vector, as hinted above, Function1s is just namespace, and linIntRampFunction1vector is a simple function derived from nowhere, it explain why the line of 'this->db()...' does not work.

Any I am gonna prepare a write-up on how to implement a new injection model of your kind recently to have your problem solved(finger crossed).

[oswald]

Thank you very much for you input, I totally appreciate it! I tried to avoid writing a new injection model, as I thought it might be nice to use builtin capabilities. With a new model, I'm able to implement what I need, so please don't "waste" your time, unless you are also interested in it. And maybe others can still benefit from it.