[ali_atrian]

Hello Everybody
I want to add virtual Mass Force to the solver icoLagrangianFoam (in foam-exd 3.0)
I did the following changes, although I doubt in each step of that:
1. In src\lagrangian\intermediate\particleForces\particl eForces.C:

a.	Foam::vector Foam::particleForces::calcCoupled
b.	(
c.	    const label cellI,
d.	    const scalar dt,
e.	    const scalar rhoc,
f.	    const scalar rho,
g.	    const vector& Uc,
h.	    const vector& U
i.	) const
j.	{
k.	    vector Ftot = vector::zero;
l.	
m.	    // Virtual mass force
n.	    if (virtualMass_)
o.	    {
p.	        notImplemented
q.	        (
r.	            "Foam::particleForces::calcCoupled(...) - virtual mass force"
s.	        );
t.	//        Ftot += Cvm_*rhoc/rho*d(Uc - U)/dt;
u.	    }

1.1. Added ‘const scalar d’ before line i
1.2. Deleted lines o through s
1.3. Uncomment line t

2. In src\lagrangian\intermediate\particleForces\particl eForces.H :

a.	            //- Calculate action/reaction forces between carrier and particles
b.	            vector calcCoupled
c.	            (
d.	                const label cellI,
e.	                const scalar dt,
f.	                const scalar rhoc,
g.	                const scalar rho,
h.	                const vector& Uc,
i.	                const vector& U
j.	            ) const;

Added ‘const scalar d’ before line j

But when I ‘wmake libso’ the ‘intermediate’ directory in ordet to compile the ‘particleForce’ I will receive the following err:

particleForces/particleForces.C: In member function ‘Foam::vector Foam::particleForces::calcCoupled(Foam::label, Foam::scalar, Foam::scalar, Foam::scalar, const vector&, const vector&, Foam::scalar) const’:
particleForces/particleForces.C:155:39: error: ‘d’ cannot be used as a function
make: *** [Make/linuxGccDPOpt/particleForces.o] Error 1
make: *** Waiting for unfinished jobs....
does any one know where the problem is from and what I should do?

Thanks for any kind of help

[ali_atrian]

oohh
pleasee someone give me a small hint
i myself think that 'const scalar d' is totally wrong why 'd' is the differentiate not a const scalar
but i really dont know what to doo
i thankfully appreciate any guidance