[b]i) If I draw the initial 2D slice with slope and develop 3D layer configuration in transverse(horizontal) direction I cannot model multilayer well. I can fix my gravity in negative y direction. But, if I select the top slice and copy the selection to all layers, it selects nodes in transverse horizontal direction instead of nodes in vertical direction.[/b]
Yes, you are right, if you copy a selection you copy the selection to other slices. If the gravity vector is orientated in negative y-direction a copied nodal selection is subsequently orientated in transversal (horizontal direction). Technically, a Multilayer Well is composed of a 1D Discrete Feature (DF) plus a WellBC at the base of the model. In principle, instead using the “classical” MLW Boundary Condition (BC) you could also assign a DF and a MLW BC manually.
[b]ii) I can have my 2D slice as rectangle and develop 3D layer such that gravity is in negative z direction. After that I can import the elevation for all slice to create slope. But it is very tedious process.[/b]
If the data are externally prepared you do not have a tedious process. You may quickly assign all elevations for different slices at once. Please have a look on our Demonstration Exercise Chapter II.3.4: http://www.mikepoweredbydhi.com/-/media/A1279D59B7E04E1888ADDC9C8A7AC65A.ashx
