CFD Online Discussion Forums - Access to particles diameter for turbulent dispersion

Dear Foamers,

I try to optimize my new model for turbulent dispersion on particles and I need to know the size of each particles to modify their turbulent fluctuating velocity depending on their size.
Until now I manually specified the particle size in my code (assuming a constant size). But in a case where I have a distribution in size it's not possible to use this method without errors for the prediction.
I tried to add the following line at the beginning of the function to calculate the turbulent fluctuating velocity:

Code:

(

    const typename CloudType::parcelType& p,



    ...

    const scalar dt,

    const label celli,

    const vector& U,

    const vector& Uc,

    vector& UTurb,

     ...

And in my code to specify the diameter:

Code:

const scalar dp = p.d();

This method is used in the Brownian motion code (../src/lagrangian/parcelTurbulence/submodels/Thermodynamic/ParticleForces/BrownianMotion), I can compile the code with these lines but when I launch the simulation I have an error at the injection time of the particles. Did I forget something or is it just impossible to use these lines in the turbulent dispersion code ?
Thus how can I access the particle size in my code ? Do you have another method?

Thanks for your help.