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ANSDIMAT

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ANSDIMAT software
About ANSDIMAT
Main menu
Notation
Main notation
Hydraulic parameters
Special functions
Methods of analysis
Analytical module operation
Data input (Editor)
Table data input
Observation time
Drawdown
Constant rate
Variable rate
Distance to the observation well
Screen level
Well data
Time of recovery measurements
Recovery
Last drawdown
Оbservation well data
Options
Choose conceptual scheme
Test conditions
Diagnostic plot
Plot construction
Choose plot
Select wells
Select time
Plot view
Axis properties
Observation data symbols
Caption and subscription
Basic types of diagnostic graphs
Graphs based on observations in two wells
Some special graphs and graphs of dimensionless parameters
View graphs
Rate plot
Stepwise rate approximation
Viewing data, removing measurements
Saving data
Settings
Aquifer tests analysis
Matching parameters (solving direct problem)
Value assignment
Theoretical curve features
Parameter calculation
Data correction
Graphical analysis
Strait-line method
Slug test
Method of type curve
Search for strait-line segment
Bisecting line method
Inverse problem solution
Less square method
UCODE
Conceptual schemes
Confined aquifer
Infinite aquifer
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
Semiinfinite aquifer
Recharge boundary
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
No-flow boundary
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
Bounded (strip) aquifer
Recharge boundaries
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
No-flow boundaries
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
Recharge and no-flow boundaries
One well pumped at a constant rate
Several wells pumped at a constant rate
One well pumped at a variable rate
Several wells pumped at a variable rate
Point source
Aquifer of infinite extent and thickness
One well pumped at a constant rate
Several wells pumped at a constant rate
Several wells pumped at a variable rate
Semiinfinite aquifer
Recharge boundary
One well pumped at a constant rate
Several wells pumped at a variable rate
No-flow boundary
One well pumped at a constant rate
Several wells pumped at a variable rate
Bounded aquifer
Recharge boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
No-flow boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
Recharge and no-flow boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
Linear source
Aquifer of infinite extent and thickness
One well pumped at a constant rate
Several wells pumped at a variable rate
Semiinfinite aquifer
Recharge boundary
One well pumped at a constant rate
Several wells pumped at a variable rate
No-flow boundary
One well pumped at a constant rate
Several wells pumped at a variable rate
Bounded aquifer
Recharge boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
No-flow boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
Recharge and no-flow boundaries
One well pumped at a constant rate
Several wells pumped at a variable rate
Unconfined aquifer
Aquifer of infinite lateral extent
One well pumped at a constant rate
Bounded aquifers. Several wells pumped at a variable rate
Pumping
Leaky aquifer
Constant level in the adjacent aquifer
Infinite leaky aquifer
One well pumped at a constant rate
Several wells pumped at a variable rate
Bounded leaky aquifer. Several wells pumped at a variable rate
Pumping
Alternating water level in the adjacent aquifer
One well pumped at a constant rate
Several wells pumped at a variable rate
Conceptual scheme accounting for aquitard storage
One well pumped at a constant rate
Several wells pumped at a variable rate
Leaky aquifer anisitropic on the vertical plane
One well pumped at a constant rate
Several wells pumped at a variable rate
Two-layer aquifer
One well pumped at a constant rate
Several wells pumped at a variable rate
Stratified aquifer systems
Three-layer aquifer system
One well pumped at a constant rate
Two-layer aquifer system
One well pumped at a constant rate
Arealy heterogeneous aquifer
One well pumped at a constant rate
Several wells pumped at a variable rate
Pumping near river
One well pumped at a constant rate
Several wells pumped at a variable rate
Sloping aquifer
One well pumped at a constant rate
Fracture-porous media
Moench’s solutions
Vertical fracture
Horizontal fracture
Constant-head test
One well pumped at a constant drawdown
Slug test
Cooper's solution, Picking's solution
Bouwer-Rice's solution
Hvorslev's solutions
AMWELLS
Starting a new model
Modeling environment
Model size and dimensions
Plot scale
Model boundaries
Wells and time measurements
Well system design
Variable production rate
Model parameters
Hydrograph
Piezometric head and drawdown maps
Plot
Distance measure tool
Background maps
Model grid mode
Classes for map
Trace selected range
Animation
3-D View and animation
Plot profiles
Export to ANSDIMAT
Wellhead Protection Areas (WHPA)
Pit dewatering
Pit layout
Dewatering by abstraction wells
Dewatering by in-pit sumps
Pit Inflow
Model
Model creation
Model editing
Graphic editor
Modify values
Parameter selection
Plot construction
Grouping
Measuring distance
Legend creation
Heterogeneity zones (MODFE)
Generate the model grid (MODFE)
Generate the model grid (RADFLOW)
Input parameters
Entering the pumping well
Running MODFE program
Calculation parameters
Time parameters
Running RADFLOW program
Calculation parameters
Viewing results (postprocessor)
Load calculation results
Animation

Analytical module operation > Aquifer tests analysis > matching parameters (solving direct problem) >

Value assignment

 In the "Matching parameters" dialog box assumed flow equation parameters are specified for solving direct problem and consequent visual comparison of observed and calculated curve. For each conceptual scheme a certain set of parameters is specified. For some schemes which analysis can be made by several solutions there is a possibility to choose one. The latter provides the opportunity to analyze and compare calculated drawdown values obtained from different solutions.

 The dialog box is launched from the main menu "Analysis > Direct solution", function key F7 or by right-mouse click in the lower left corner of the plot field.

 

       

"Matching parameters" dialog boxes.

 

       

"Matching parameters" dialog boxes: examples .

 

Explanatory table

"Parameters" tab


Specifying aquifer parameters for matching and choosing the solution



Text boxes for flow equation coefficients input. The number of boxes and their names depend on the chosen conceptual scheme

"Isotropic aquifer" option

Specify vertical anisotropy (for schemes with partially penetrating well)

"Delayed piezometer reponse included" option

Include storage capacity and shape factor of piezometer in drawdown calculations (for some of the Moench’s solutions)

"Skin" option

Use skin-factor for matching parameters

List

Choose piezometer location for matching parameters

"Solver" list box

Choose solution for matching parameters. Occurs if the conceptual scheme can be analyzed using several solutions

"View" tab


Define the theoretical curve appearance

"Options" tab


Options for data displaying and saving


"Frequency" frame

Specify the precision of the graph (the number/frequency of calculation points within the entire calculation interval) and the frequency of calculation points saved in a file by click "Save" button

"Draw" frame

Options for displaying calculation data

 "Lines" option

In the current version of the program the displayed curve has only the straight-line view

 "Redraw" option

Switch on/off the calculated curves updating option (when pushing "OK" or "Apply" buttons)

"Save" frame

Choose values (either observed or/and calculated), displayed on the current plot, for saving (when pushing "Save" button)

"Points" frame

Specify features of calculation points on distance-drawdown plots

 "Size" text box

Point diameter

 "Color" button

Point color

"Data correction" button

Open dialog box "Data correction"

"Numerical inversion parameters(Moench)" frame

Parameters for Moench’s solutions. Applied in case of Moench’s solution instability (see WTAQ2 and WTAQ3 program description). The input values are saved automatically. Push "Default" button to return to initial values

 "RERRH" text box

Relative error criterion for Hantush convergence (for WTAQ2 only); in the program the parameter is used only for Moench’s solutions for linear source in confined aquifer

 "RERRNR" text box

Relative error for Newton-Raphson iteration and summation (WTAQ2: 1e-10; WTAQ3: 1e-9 to 1e-10)

 "RERRSUM" text box

Relative error for summation (WTAQ2: 1e-15; WTAQ3: 1e-7 to 1e-8)

 "XMAX" text box

Maximum number of terms in summation (WTAQ2: 1000 – 4000; WTAQ3: 3000)

 "NS" text box

Number of terms used in the stehfest algorithm. this must be an even number the value of which depends upon computer precision (8). (if the computer holds 16 significant figures in double precision let NS = 8 to 12.).

Note: if results are numerically unstable, as may occur if beta is very small, NS can be reduced to 6 (or even 4). Precision will be reduced, however, and results should be checked for accuracy

 "Default" button

Specify parameter values for WTAQ3 program

"Recalculate" button


Recalculate aquifer parameters (see "Parameter calculation" dialog box description); specify piezometer and observation well shape factors for Moench’s solutions

"from UCODE" button


Load parameters from the previously solved inverse problem

"Save" button


Save observed and/or calculated parameter values in dat file

"Clear" button


Update the plot. Previously plotted calculated curves are deleted