How to account for trubulence visicosity (kinematic) nut in CFDEM？

Hi Chris,

I wonder how to access the trubulence visicosity nut(). For incomprissble flow, all force models
use:

const volScalarField& nufField = particleCloud_.turbulence().nu();

If a RAS model (e.g k-epsilon) is selected, should we conside thetrubulence visicosity in CFD-DEM? Lets say:

const volScalarField& nufField = particleCloud_.turbulence().nu() + particleCloud_.turbulence->nut();

Furthermore, if there is multi-phase fluid in the Domian, the visicosity is a mixtured value, e.g effective muf:

surfaceScalarField muEff = twoPhaseProperties.muf() + interpolate(rho*turbulence->nut());

I tried "particleCloud_.turbulence->nut()" but without success. I wonder, how can we add trubulence visicosity, and mixture visicosity within the CFDEM framework?

Thanks,

David