C++ (Cpp) parcelType::Tc Examples

Example #1

File: BrownianMotionForce.C Project: Kiiree/OpenFOAM-dev

Foam::forceSuSp Foam::BrownianMotionForce<CloudType>::calcCoupled
(
    const typename CloudType::parcelType& p,
    const scalar dt,
    const scalar mass,
    const scalar Re,
    const scalar muc
) const
{
    forceSuSp value(vector::zero, 0.0);

    const scalar dp = p.d();
    const scalar Tc = p.Tc();

    const scalar eta = rndGen_.sample01<scalar>();
    const scalar alpha = 2.0*lambda_/dp;
    const scalar cc = 1.0 + alpha*(1.257 + 0.4*exp(-1.1/alpha));

    const scalar sigma = physicoChemical::sigma.value();

    scalar f = 0.0;
    if (turbulence_)
    {
        const label cellI = p.cell();
        const volScalarField& k = *kPtr_;
        const scalar kc = k[cellI];
        const scalar Dp = sigma*Tc*cc/(3*mathematical::pi*muc*dp);
        f = eta/mass*sqrt(2.0*sqr(kc)*sqr(Tc)/(Dp*dt));
    }
    else
    {
        const scalar rhoRatio = p.rho()/p.rhoc();
        const scalar s0 =
            216*muc*sigma*Tc/(sqr(mathematical::pi)*pow5(dp)*(rhoRatio)*cc);
        f = eta*sqrt(mathematical::pi*s0/dt);
    }

    const scalar sqrt2 = sqrt(2.0);
    for (label i = 0; i < 3; i++)
    {
        const scalar x = rndGen_.sample01<scalar>();
        const scalar eta = sqrt2*erfInv(2*x - 1.0);
        value.Su()[i] = mass*f*eta;
    }

    return value;
}