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iMOD User Manual, online version 3.6


BRelease Notes iMODFLOW

Version

3.00.01

iMODFLOW_V3_00_01_METASWAP_SVN1004_X32R.exe
(for X32-bit systems)
iMODFLOW_V3_00_01_METASWAP_SVN1004_X64R.exe
(for X64-bit systems)

Date

15-10-2014

Based On

3.00.00

New Functionality

Changed Functionality

linked with MetaSWAP SubVersion number 1004 from repository
https://repos.deltares.nl/repos/GWSobek/trunk/src/modmsw/

Fixed Bugs

SVN 49

When a GEN-file coincides exactly with cell face no HFB-cell face was assigned resulting in a barrier with a hole. This bug has partially been fixed; with the real world test model NHI the bug fix works, however, the standard USGS HFB-test still fails because the test contains a barrier partly at a cell face. Version 3.00.01 was released because the bug manifests only in exceptional cases; a subsequent bugfix is planned to also fix these exceptional cases.

Version

3.00.02

iMODFLOW_V3_00_02_METASWAP_SVN1004_X32R.exe
(for X32-bit systems)
iMODFLOW_V3_00_02_METASWAP_SVN1004_X64R.exe
(for X63-bit systems)

Date

20-11-2014

Based On

3.00.01

New Functionality

Changed Functionality

Fixed Bugs

SVN 80

IMOD-319: default value added for KVA-module (1.0).

SVN 81

IMOD-327: bug fixed upscaling anisotropy factor (most frequent occurrence).

SVN 82

Bug fixed applying factor for recharge.

Version

3.01.00

iMODFLOW_V3_01_00_METASWAP_SVN1031_X64R.exe
(for 64-systems)

iMODFLOW_V3_01_00_X32R.exe (for 32-bit systems)
iMODFLOW_V3_01_00_X64R.exe (for 64-bit systems)

Date

17-07-2015

Based On

3.00.02

New Functionality

SVN 194

In Perched Water Table PWT-package: new conceptual enhancements implemented for how groundwater flows at the edges of a Perched Water Tables to avoid some numerical instabilities.

Changed Functionality

linked with MetaSWAP SubVersion number 1032 from repository
https://repos.deltares.nl/repos/GWSobek/trunk/src/modmsw/

SVN 188

Update for VS2008 (EXTERNAL statements removed) - Update for interface MODFLOW-TRANSOL.

SVN 194

HFB-package update (based on an earlier implementation in iMODFLOW 2.6.) improving the discretization of curved lines to the model grid.

SVN 202

PEST package update based on iMODFLOW 2.6.

SVN 221

Update for TRANSOL interface.

SVN 242

Update interface with TRANSOL to previous version.

SVN 259

Some minor iPEST-messages and I/O adjustments.

SVN 260

Removed ’modflow’ subdirectory from output results directory.

SVN 214, 215, 228-230, 234, 246

Update of iMOD license text.

Fixed Bugs

SVN 105

In SGWF2BCF7C: adding uninitialized variable CR to variables list.

SVN 191

Initialization of constant CNSTNT added for u1drel and u2dint.

SVN 212

In HFB package: minor error-correction for case that lines are outside model domain.

SVN 238

In Grid2MetaSWAP: reading ascii files standard with xllcorner and yllcorner which also could be xllcenter and yllcenter.

SVN 257

In coupling Modflow-MetaSWAP with Mozart: change of general missing parameter value.

SVN 258

In HFB package: minor error-correction for case that lines are outside model domain.

SVN 261

In ISG package: a small change in the ISG calculation routine was made.

SVN 261

Automated scaling factor: the computation of the simulation window was sometimes incorrect in case the extent of the entered model was not exactly divisible by the cell size of the model.

Version

3.2

iMODFLOW_V3_2_METASWAP_SVN1044_X64R.exe
(for 64-systems)
iMODFLOW_V3_2_X32R.exe (for 32-bit systems)

Date

10-09-2015

Based On

3.01.00

New Functionality

Changed Functionality

linked with MetaSWAP SubVersion nr. 1044 from repository
https://repos.deltares.nl/repos/GWSobek/trunk/src/modmsw/

Fixed Bugs

SVN 317

Bug fix uninitialized arrays when using the ANI package. This problem may result in a floating point error at some machines.

SVN 318

Bug fix automatic assigning ISG to layer: a floating point error (division by zero) might occur are specific machines.

SVN 344

Bug fixes CHD-package: 1. input start/end head was swapped; 2. iMOD usage of factors (e.g. h = 0.5h1 + 0.5h2) was incorrect.

SVN 352

Bug fix ISG 2-D cross sections.

Version

3.2.1

iMODFLOW_V3_2_1_METASWAP_SVN1044_X64R.exe
(for 64-systems)
iMODFLOW_V3_2_1_X32R.exe (for 32-bit systems)

Date

20-11-2015

Based On

3.2

New Functionality

SVN 438

iMODFLOW can now work with foldernames containing spaces.

Changed Functionality

Fixed Bugs

Version

3.3

iMODFLOW_V3_3_METASWAP_SVN1047_X64R.exe
(for 64-systems)
iMODFLOW_V3_3_X32R.exe (for 32-bit systems)

Date

25-03-2016

Based On

3.2.1

New Functionality

Changed Functionality

linked with MetaSWAP SubVersion nr. 1047 from repository
https://repos.deltares.nl/repos/GWSobek/trunk/src/modmsw/

Fixed Bugs

SVN 561

Restoring the gridding functionality of flow-width in ISG.

SVN 618

Bug fix Metadata package (MET) timestep management in MODFLOW, causing a delayed read of transient well data. This bug was relevant when defining stress period lengths that were larger than the available time discretisation present in the ipf- and txt-files used as the source of the abstraction data.

SVN 621

Adjusted scaling of well extraction from median value to mean values weighted to time - usage of nodata values in txt files.

Version

3.4

iMODFLOW_V3_4_METASWAP_SVN1047_X64R.exe
(for 64-systems)
iMODFLOW_V3_4_X32R.exe (for 32-bit systems)

Date

20-06-2016

Based On

3.3

New Functionality

Changed Functionality

Fixed Bugs

SVN 660

DRN: Memory reallocation of the drain package will be performed whenever the number of drains exceeds the previous allocated memory.

SVN 662

TIMESERIES: A limited number of unit numbers were available (10-99) for time series, now it is set to (10-999).

COMMON: An inactive package in the runfile was seen as "reuse" package instead of a new package definition without any entries.

SVN 680

PCG: The cleaning of the matrix coefficients was not done correctly.

SVN 671

IPF: Reading screen depths only needed whenever ilay.eq.0.

SVN 719

ANI: The incorrect nodata values were assigned to the inactive corner cells at the computational area.

SVN 720

HFB: The issue with the out of array boundary horizontal flow barrier package is solved.

SVN 732

COMMON: The initialization problem is solved for iMOD license agreement file.

SVN 786

COMMON: A non-converging steady-state MODFLOW simulation was not finalized correctly.

SVN 792

BALANCE: Computing the waterbalans, the ANI-terms were not included in the constant-head boundary flux, also they were not applied as a correction on the BDFFFF and BDGFRF fluxes for the LPF-configuration.

SVN 799

PWT: The floating point exception for inactive cells should be skipped in the perched water table package.

SVN 806

CHD: For zero-thickess cells at a subdomain boundary a constant head cell could be activated incorrectly resulting in an error message "no-flow cells cannot be converted to constant head cells".

Version

3.6

iMODFLOW_V3_6_METASWAP_SVN1196_X64R.exe
(for 64-systems)
iMODFLOW_V3_6_X32R.exe (for 32-bit systems)

Date

30-05-2017

Based On

3.5

Starting from iMOD 3.6 we summarize all new, changed, extended and fixes functionalities in the format of the distribution-email of that particular release sent to all iMOD-community members.

For the release notes of iMOD 3.6, please go to the iMOD-website: http://oss.deltares.nl/web/imod/release-notes.