Dept. of Geology, Anna University, Chennai, India Opportunity to do PhD with Senior/Junior Research Fellowship Applications are invited to work in a research...
Elango Lakshmanan
elango@...
Jun 2, 2008 8:26 am
2843
Dear members I have been working on a groundwater model which models a contaminant plume in a sand and gravel aquifer and have noticed negative concentrations...
Haley - Take time to read this page. I found it quickly after Googling "Grid Peclet number." http://www.vatnaskil.is/manual/ch4_6.htm This tells you all you...
Hi Hayley, You have a lot of numerical dispersion occurring in your simulation. This can occur if your time step is too large, dispersivity is less than or...
Hello! Please help me. 1. I dont understand where I choose units ( I see examples, but in different examples there are different dimension). 2. Recommend me...
Maria- You do not specify units with MODFLOW. But you must use consistent units. That means, if your grid is in meters, your hydraulic conductivity must be in...
Michael.Beach@...
Jun 11, 2008 12:45 pm
2848
Hi, I can answer your first questions about PMWIN. You don't need to assign any length unit for the MODFLOW model in PMWIN, you just need to use a consistant...
In addition to using consistent units for length and time, you need to specify time units in the BAS file by setting the flag ITMUNI. This is used for writing...
Hi, Thanks very much. I use a free PMWin 5.3. Now I am studing (this is myself studing) modeling about confined aquifer. I havesome difficulties about define...
Pete, is there any paper about these values of a good convergence? And where I can find the percent discrepancy? Thanks! Paulo To: gwmodel@yahoogroups.com ...
From MASS BALANCE REPORT output u can get %descepancy. ... From: Paulo Leal <pjvleal@...> Subject: RE: [gwmodel] About dimensions in Processing Modflow...
Hi everyone, I need to do some simple analytical calculations to track the movement of a thermal plume from a hot water injection well. Can anyone suggest me...
The percent discrepancy is listed in the listing file created when a modflow simulation is performed. This is a text (ascii) file. Search the file for those...
Dear PMWIN users, I am using pmwin for my modeling studies to simulate ground water flow.When I saw the results of simulation using graph option (Head Vs...
Jayaram, The starting heads in a gw. model do not impose any constraints, Their only meaning is to act as a starting point for the calculations, i.e., to guide...
Hallo u calibrate your steady state model through distribution of K-values and recharge in zonewise & layerwise (for multiple layers). Also, check your input...
I didn't say they are not important. Indeed they are, but still they do not impose constraints. ... From: Pete Sinton To: gwmodel@yahoogroups.com Sent:...
Dear all, I am using PMWIN for ground water modeling and the results of simulation is not matching the observed values.My model has sea as boundary in the...
I do agree with you, but in this particular case it's more probable that it is a boundary condition problem as he is talking about the starting head and not...
My output results show some vectors that are a lot bigger then the rest. These vectors are in the limit of the dry cell area, and point toward the flow area....
Are we talking about a steady state model or transient model? Storage in steady state doesn't change (equal to zero). Storage comes into play with transient...
Rob Maric
rmaric@...
Jun 21, 2008 2:47 am
2866
Hi, We are doing a project related to water recycling scope for Industries for reuse in India and bulk water tarrif and possible rebate to be given to ...
eldho@...
Jul 1, 2008 3:53 pm
2867
Dear DR Eldho: In 2004, the Staple Fiber Factory of GRASIM at Birlagram, Nagda (MP) won the Stockholm Industry Award for water conservation, recycling and...
Dr. S. D. Limaye
limaye@...
Jul 1, 2008 4:06 pm
2868
Hello Everyone, I have a question related to MODLFOW 2000 Datasets. We give the Layer 1 Top Elevation (Top) in the Discretization (DIS) Package and Ground...
Phanindra, Although Top may be assigned as land-surface elevation, there is no requirement that it be assigned this way. Similarly, SURF commonly is assigned...
Top is the top elevation of layer 1. For the common situation in which the top layer represents a water-table aquifer, it may be reasonable to set Top equal to...
rbwinston@...
Jul 9, 2008 3:44 am
2871
Ned is right: SURF is NOT the head above which no evapotranspiration from the saturated zone takes place. Instead it is the head at which evapotranspiration...
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