emilia novo

Or to better explain, it is the same FEFLOW version (version 7.0) with which I created the initial slices and now have this problem

I am not mixing versions because I created the model and the present slices with the same version of FEFLOW. So the problme must be something else

I want to create a slice between slices 4 and 5 of my model. I want the values of Elevation remain as they are now in slices 4 and 5 and the new slice to be rightly in the middle. However, when I open the 3d Layer configurator, its format does not show the icons to introduce new slices, as it is shown in the attached document. The problem does not seem to be related with the fact that slices are Fixed. When I deactivate All Fixed at the bottom of the configurator, the  square Fixed in each slice goes empty but I am unable to change the status of the slices from fixed to movable or whatever. Regardless of All Fixed being active or inactive, the the bar with the icons to introduce new slices still does not appear, so I am unable to introduce any slice between slices 4 and 5 or any other slices. How can I solve the problem and introduce the desired slices? Emília Novo  

Every now and then the slices of my model disappear from view in the Slice screen, with the exception of slice 1. I don't know what causes this and it is not a sclae problem because the slice 1 is still seen in the same scale as before the other slices disappearance. The slices are in the model, simply when I navigate from slice to slice, what I get is a blank Slice screen . So far what I do is go to slice 1 (the only one visible) to remesh a small part of the model. After this the slices come back to view. However I don't believe this is the only solution to this glitch. Is there another way to visualise again the slices, once this happens? I have another distinct problem: the amplification of the magnifying glass in Inspection tool is big and this is cumbersome when I try to pinpoint a node to read its value of a certain parameter. How can I change the amplification of this magnifying glass so it is easier to select a node and read its values?

Thanks, I will contact Mike support. I did as you suggest and checked the Max interior angle of triangles but those areas have triangles all in the green or, the worst ones, are a bit above the 90º. No Delauney violations. Thanks again for the reply, I learned a bit more.

The results of my model are being strongly affected by error-norm-flow areas. Error-norm-flow maximum values are above 0,9. There is no conductivity or other hidraulic properties' gradients because I am giving the same values to all cells and for the 3 dimensions of the space (it is a 3D regional model) I refined the mesh in those error-norm-flow areas to try solve the problem but it was as if nothing has been done (except extra computing time when siluating due to more mesh cells). How can I overcome this issue once refining the mesh doesn'tsolve it?

Thanks for the link but it sends me to the Vol. V and when I google the vol. IV, nothing shows up. I tried to find ideal element size in the link you provided but it does not seem to be there. Probably because it is in the vol IV and the link sends me to Vil. V?<br> I just want a basic definition about what there things are and if they are related with the diameter of the well and the size of the mesh elements around the well.

I cant find info about what is the virtual radius and the ideal element size. Can someone explain what these attributes are?

I want to input, into BC head-constant nodes a max. flow-rate constraint = 0 m3/d and a min. flow-rate = -5 m3/d. So I select the nodes where the constraints are to be applied and the I go to the Data Panel, and in the Hydraulic heads BC I open the menu and click on ad parameter,&#160; I then click in min. flow-rate constraint and, as in your documentation files on this issue, I double click on the value in the editor toolbar. No change happens in the units (which should be by them m3/d) once we are applying a constraint to a constant head BC. If I click on the green checkmark, what happens is that the value in the editor toolbar enter as my BC and when I do the Inspection it comes as unconstrained.&#160;<br> How, then can I enter constraints? Must I define on the Problem settings that the model is constrained?<br> <br> <br> By the way, as soon as I click on the green checkmark, the option of the constraint I selected previously, simply disappears from the BC menu Add parameter. This means that if I try to apply it to an area of my river network and then go to a completely different area of the model, and select a new set of nodes, if I go to the Add parameter, that type of constraint is no longer available. How can I overcome this?

This large regional model is being simulated for natural conditions - meaning, no pumping wells active - and when I run it, it completely floods. And it floods a lot!&#160; I suspected it could be my conductivity values, so I removed them and used the default FEFLOW values instead, just to check. Then I run the model and still floods, although not as crazily as before and not the whole model but around many of the BCs. I tried with conductivities Kx = Ky = Kz = 100 and the model still floods and in the same places.<br> So my problem is not just the conductivities but something else as well. In this stage of the calibration I am using the head constant BCs for the river network. Recharge enters the model thorough In/Outflow on top/bottom.<br> <br> So then I returned to the default conductivity of FEFLOW and tried to simulate using sepage face constraints in the BCs where flooded areas occurred in their neighborhood. No change occurred. It still flooded.<br> <br> I the started to simulate through different definitions of the 1st slice (all the remaining 31 ones are defined as Dependent). It just <strong>didn't flood</strong> when I defined the 1st slice as Phreatic, constrained head on top of model domain. But in this case the Imbalance was on the same magnitude of Recharge (10^6 when the magnitude of the BCs was 10^8), so it is a too large imbalance. In all the other possible options <strong>it flooded and in the same areas, always&#160;</strong>(such areas are always neighboring the BCs). The exception is when 1st slice was defined as Free, constrained head on top of the model . In these cases it still floods but only on a few nodes. However the Imbalance if the 1st slice is Free is less than 1 m3/d, which is too low.&#160;So what is going on and what solutions might be implemented?<br> <br> I am not willing to define constrained heads on top so I thought that defining constraints would be a solution. However when I click the nodes to apply the constraint, once I just click them once the window on top of the screen to define this constraint does not show up with m3/d, as it should but remains with the head units. Is this because I just click once in the nodes of the BCs? If not, then how sould I do it to define the constraints?<br> &#160;