October 7, 2013: Added a w2 resource file for the source code that was inadvertently left out. Also updated the pdf user manual with bookmarks enabled for easier document navigation. No other changes were made in case you already downloaded the 10/3 release.
October 3, 2013: Many thanks to Bruce Willand for tracking down an error in SPECIFY for inflowing tributaries. This bug put an inflow 1 layer lower than it should have been. There were also significant updates/fixes to the PUMPS algorithm – especially when using the LAT option. Several other fixes were cosmetic in that they did not affect model results but cleaned up unallocated memory issues.
September 11, 2013: There were a couple minor bug fixes made (see release notes) and some updates/corrections to the User Manual in this updated release for today. Also, the new 32 bit executable for W2 should now run in XP. We are still looking at a few updates to the post-processor hopefully in the not-to-distant future.
August 14, 2013: We have migrated over to the latest Intel compiler XE 13.1.3 so we have new executables. We have noticed in some cases issues with the prior 32 bit executable – the new compiler seems to rectify these issues. There are a few other minor updates in the User Manual and minor fixes in this release.
June 25, 2013: There are several updates – not only bug fixes and User Manual edits, but speed improvements in the code. In my tests of the new code, limiting initialization of dimensioned variables in the code has improved computational time by between 2 (for a temperature only application) to 25% (for a water quality application with a large grid). There is also new w2tools Excel macro from Jeff Gregory, Corps of Engineers, Nashville District. Coming up soon will be an update to the W2Post post-processing tool – expect this in a couple weeks. These are mainly bug fixes rather than further enhancements.
April 5, 2013: A few minor bug fixes have been applied, more checks were added to the preprocessor, and the few minor items in the user manual has been updated.
November 5, 2012: I updated the download page to include an update to the preprocessor. We added more error trapping checks to prevent the preprocessor from bombing if there is a problem with an input file. So hopefully it will give you a much better idea of where there is a problem. Also, I added Jeff Gregory’s Excel macro utility that makes developing input files in Excel much easier. All other files are unchanged from the October 30, 2012 download.
October 30, 2012: We have finally released what we call Version 3.71 that includes the DSI Inc. post-processing tool. Also, we have made some code changes to improve the speed of computation. You should notice a speed up of 20% or more if you have a lot of water quality state variables. If you are running only temperature you may get up to 5% improvement in run times. Please let us know how this new post-processing tool works. Instructions are included in the model release notes.
September 12, 2012: Uploaded new W2 source files that included compiler files for Intel Visual Fortran Composer XE. Earlier compiler resource files were corrupted which caused heartburn for those trying to compile the code. All should work now by just opening up the Intel Fortran compiler files.
September 11, 2012: Added more free format input types: lpr and met input files to the model. We will post this new code and an Excel macro that makes it easy to output selections within Excel in csv format. Still waiting for post-processor release. The CE-QUAL-W2 workshop will be June 17-21, 2013 and will include a more thorough discussion of the new post-processor and how to easily develop input files with the new file formats.
August 20, 2012: Updating the code and preprocessor to accept free format inputs for input files. These will read the first character of the file – if the ‘$’ character is the first character in the file the model assumes it is a free format input file. A typical input file would be a csv comma delimited file. So far this now works with the following files: cin, ctr, cdtr, cpre, wsc, vpr, and the bathymetry file (already described in the manual). The manual will be updated once all these free-format input files are implemented in the w2 and prew2 codes. This will make it much easier to create all your input files. In addition the new post-processor should be ready for roll-out the end of this week or the first of the next week.
August 16, 2012: Still testing Paul Craig’s post-processor. It should make evaluating W2 model results incredibly easy and powerful. We should be ready to post the code soon for user evaluation. Added the Spokane River to the set of example problems in the download package.
August 7, 2012: We have been converting a lot of the code to full double precision constants and expressions to make the code’s numerical precision consistent. This will avoid the common problem when others try to compile the code without setting all default real numbers to double precision. Paul Craig has been fine tuning the post-processor that will be a very useful tool in using the model.
July 9 2012: We set the Version 3.7 download behind the registration page. The version 3.7 model is still missing one item before we are ready – this is the trapezoidal channel schematization. This has taken a lot longer than expected to debug. In a few days we will have Paul Craig’s post-processor available as part of the V3.7 download. This will be a free download and enable animation and easy post-processing of model results. Stay tuned.