Martin Stewart

I'm working on a pit slope dewatering model in which I need to include changing topography during mining. Does anyone have experience in executing such a model and would you be willing to offer some strategies how to model this most effectively?

Up to this point I have been using a deforming mesh to model the water table in a partially unconfined scenario. I could have a time-dependent seepage face boundary condition, but this would include far too many nodes to assign efficiently :P.

Thanks
Martin

Hi Peter,

I see the transient option now, thank you.

The problem I have is that I am limited to two points in time and don't have any information regarding the shape of time-functions between those points. For accuracy the best I can do with my data is essentially calibrate two steady state problems with unique boundary conditions but identical geometries and material problems. Is this possible with the current PEST manager?

Correct me if I am wrong, but if I run a transient problem any time steps between my two known timesteps could potentially skew the solution if I simply interpolate time-depend boundary conditions and observation points? Can you weight time steps or just observation points in a PEST analysis?

Thanks
Martin

Does anyone know if it is possible to calibrate a model using Pest for several different timesteps? I have several snapshots in time of a complex 3D model I would like to calibrate my fixed parameters to (K's mainly). Do I require an external PEST module or am I left to try and program my own PEST IFM interface? The built-in version doesn't look like it will work for me.

Thanks!

Martin