Tana Yun

Hi friends,

I have a 3D line with XYZ information generated from Arcmap in shp. format. I have already imported this shapefile into FEFLOW where I have generated a 3D model. My question is: [b]is there a way that I can convert this 3D line to a 3D nodes selection?[/b] so that I could apply BCs to the selected nodes? As the 3D lines contains various elevation data at different part, which means that the converted nodes selection would be on different slices according to the line elevation information.

Any suggestion would be deeply appreciated.

Tana

HI Peter,
thanks so much for your explain, very helpful ;)

Hi Peter,

Thanks so much for the reply. I am using a version of 7.x. It does offer both 'faces' and 'slice faces' as wells 'join faces', so you mean I should use 'select faces" if I want to assign a horizontal fracture to an entire slice?

I also feel confused about the parameters that need to be specified in Darcy Discrete feature: Thickness, porosity, K value.
Does the thickness means aperture? or the meaning would be different depending on the choice of 'faces' or 'slice faces' selection?
It seems the porosity should be 1 for all the time, as this is a fracture,
Then  K=T/aperture?
Not sure if I am right. I'd be appreciated if you could shed me some light.

This might be a simple question, but I haven't found any material that discuss this in details.

For ex. if I would like to simulate a fracture with Transmissivity  1e-6m/s and aperture of 1e-4m, how could I assign parameters in Darcy discrete Feature?

There should be three parameters to be specified: [b]Thickness, conductivity and porosity[/b].
1: Thickness=aperture=1e-4m; porosity=1; conductivity=????
2: Thickness=0.1m, conductivity=1e-5m/s, porosity=0.001 (this is actually a thin layer of 0.1m thickness to be equivalent)

Could anyone give me some advice which method is the right way? or there is a third choice?

Thanks,
Tana