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Hi,

I'm trying to represent a tidal turbine in T3D. I have couple of questions:

1- most of the posts on the forum which are about a similar issue suggest considering using the head loss concept. However, all those posts use implicit source term. Is there a reason why to use implicit not explicit source term?

2- The momentum equation in T2D is DU/DT + S1U*U/H =..., is it the same in T3D or it will be DU/DT + S1U*U =...? and if I'm using the explicit S0U instead of S1U, how will the momentum equation look like?

3- In T2D, turbines can be represented as a drag force calculated as follows:
FUDRAG= 0.5*PI()*R**2*CD*Uref**2/(AIRE*Hi*Ui), similar for FVDRAG.
So if I want to apply this in 3D using the implicit sourece term, do I need to say:
S1U = FUDRAG*Ui*Hi or FUDRAG*Hi or just =FUDRAG

and if I want to use the explicit source term, how would the equation look like?
S0U = FUDRAG*Ui*Hi?

Any feedback or help with this will be much appreciated.

Thanks,

Mohammed