[mayank.dce2k7]

Hi Foamers,

I want to introduce some correction in Stochastic Dispersion Model file StochasticDispersion.C. I have to introduce a damping factor that modifies the particle fluctuation velocity(due to turbulence) near the wall.

Following code is from StochasticDispersionRAS.C:

scalar sigma = sqrt(2.0*k/3.0);

I want to modify above code to something like below:

scalar sigma=(1-exp(-0.02*yPlus[p.cell()]))*sqrt(2.0*k/3.0);

where yPlus is non-dimensional wall distance and p.cell() is location of cell where the particle is present.

I can calculate yPlus for each cell, using a post processing utility, at t=0. yPlus is then saved in text file in '0' directory of my OpenFOAM case setup. I need to modify the dispersion model code so that it can access the calculated yPlus values as explained above.

Can somebody guide me?

Regards,
Mayank