feflow is not a really 3D-model? but a integration of 2D-models?

Hi:
    I don't know whether the  realization is correct?
    I think it is not need in the really 3D-model to  divide a serious of layers.
expecting help  .
thanks
lhy

FEFLOW is a full 3D model, i.e., all basic equations are solved in three dimensions. The discretization in 3D, however, is based on a layer concept. This makes the data input much easier.

thanks very much.