zhengq

Hi,
the HELP with FEFLOW says:

[i]The Direct solution strategy provides the advantage of an exact solution of the equation system without any residual error due to a solver iteration. This might come at the expense of longer runtimes and higher memory demand, depending on problem setup and available hardware.[/i]

But when I choose direct solvers, I got the following info:

                  No convergence in iteration loop at time: 1.000000e-03 with remaining error: 2.990310e+06 greater than  1.000000e-03

it is contradictory. Any comments and help are appreciated.

Quinn

Hi,

When I used "Measure" to measure the distance between two points, very often an error message appeared:

        Math: Argument domain error in function sqrt!

Any comments?

Thanks,

Quinn

Hi Carlos,

When do you think the revised/upgraded version 6.2 could be issued?

Thanks,

Quinn

Hi,

I am creating a 2D vertical planar steady state flow model.

Problem 1:
I tried to assign seepage face to a boundary. I double clicked on "hydraulic head-BC", selected several nodes by double clicking "seepage face_upper" under Node Selection, chose "seepage face", and clicked on the check mark.

An window popped up, saying:

[b]Max. flow-rate constrained cannot be displayed for Domain/seepage face_upper/Node Slice Intersection. Please select at least one compatible spatial unit before adding a data or map source to a view.[/b]

But the view window still shows the seepage face. I checked the seepage face using Inspector, and things seems fine. 

But when I selected the same node manually (not by double clicking "seepage face_upper" under Node Selection), everything worked fine.

Problem 2:
Another problem then came. When I chose the same nodes, and clicked on the cross mark, I cannot deleted these seepage face BC (when Seepage Face shown in the Editor tool bar); An error window popped up, saying "[b]invalid pointer[/b]"! Why?

I never had this problem with FEFLOW 6.1.

Thanks for help.

Quinn 

Hi Carlos,

I just downloaded FePEST from online, which is version 6.2.2.987. In terms of license, I can use FEFLOW, and I think I should be able to use FePEST, right?

Thanks,

Quinn

Hi,

I launched Parameter Estimation, clicked on "New", and selected a .fem file from the tutorial folder, and tried to open it. And then a popup window said "not licensed". Do I need a separate license for FePest?

Thanks,

Quinn

Hi,

For the first time I run parameter estimation, I was asked to give the directories to all the executables under tools>options. I just found fePEST.exe. where can I find the rest?

Thanks,

Quinn

Hi,

When I opened a model developed in FEFLOW 6.1, the base map I used in FEFLOW 6.1 (which appeared in the back in FEFLOW 6.1) comes to the front. It is totally opacity, and I cannot see the mesh. I tried to adjust the transparency, and it does not work. How to put the base map in the back so that I can see the mesh? Any help is appreciated.

Quinn

Hi,

FEFLOW includes solver for symmetric and nonsymmetric system. But how do you know if your system is symmetric or nonsymmetric?

Thanks,

Quinn

I used seepage face to simulate dewatering wells in a 3D model with 9 layers. I re-run this .fem file recently, but cannot get the same .dac file as I got before (very strange!!!). The pumping rate from the seepage face were reasonable from my previous .dac file. But the .dac file I got this time shows a unreasonably large value and variation in pumping rate. I am thinking to re-create the .fem file from the previous .dac file. But is it possible?

Thanks for help.

Quinn