CFD Online Discussion Forums - Adding new parameters and auto fill them in the constructor

Hello OpenFOAM users,

I've got a question on some coding I did recently and what I haven't been able to get to work yet.

In our team we are doing a simulation of particles moving in a solution through a tube. We reworked one of the lagrangian solvers (I'm afraid I cannot tell you which one it is atm, but that doesn't go into account too much) and implemented a dielectrophoretic force, that eventually stops the particles moving in the solution.

So far everything goes fine, the particles really stop moving at the desired point, but now I want to implement a little if query that makes the solver stop trying to move the particle, when it hasn't moved for the last 3 steps. Therefore i could reduce the amount of calculation needed for the simulation.

So I did the following:
in the src/lagrangian/basic/particle library I added in particle.H in

Code:

 public:



        // Public data



            typedef CloudType cloudType;



            //- Flag to switch processor

            bool switchProcessor;



            //- Flag to indicate whether to keep particle (false = delete)

            bool keepParticle;

the following line:

Code:

//- Flag to stop particle from moving without deleting

        bool moveParticle;

and in the protected data I added

Code:

//- List of last 3 positions

    FixedList<scalar, 3> positionHistory_;

The idea of the list is, to save the last 3 positions of the particle and when the difference of the positions becomes smaller then a certain moving tolerance, the "moveParticle" flag should be turned to false.

In the particle.C file I added in every constructor:

Code:

positionHistory_

    (

    0.0

    0.0

    0.0

    )

cause the particles should be initialised with an empty positionHistory.

When I try to compile this, i get the output:

particle/particle.C:68:2: error: expected ‘)’ before numeric constant
0.0

But even if I put brackets around the scalars nothing changes on the error message.

Thats been a lot of text so far, but I hope you will be able to help me.

Greetings BD