We are often making traditional layered feflow models with complicated structures, such as tunnels and caverns. If the geology is complicated and the structures are too, the layered approach becomes difficult and thus we are looking towards unstructured models. In this case the geology may be imported from a geological modelling software, but what about the structures ?. We usually start with a 3D autocad file, but as I understand it, feflow (tetgen) can only use PLCs to make the grid ?. Is this correct ?. If the structure is simple, its easy enough to make a PLC by hand, but when it's a long winding tunnel, this is not a viable option. Can anyone suggest a way of getting a 3D autocad file into feflow to be used for construction of an unstructured mesh. We would probably need to simplify the structure before using it for meshing and often there are many points in the Autocad 3D file that does not conform to PLC rules due to inaccuracies in the drawing. Any suggesions will be appreciated.
Hi. Simple question but havn't found description in FeFlow documentation. Does geometry.thickness of a 2D discrete feature indeed refer to thickness of the feature, e.g. thickness of fault zone? and when using Hagen-poiseulle law, what is geometry.thickness used for, considering that hydraulic aperture is also a parameter?