This file documents the changes made to VADOSE/W since the release of Version 1.00. The numbers in parentheses after some items refer to a Knowledge Base article with more information. These Knowledge Base articles may be found by visiting the GEO-SLOPE web site at http://www.geo-slope.com.
· A bug was fixed in the gas diffusion coefficient for fully saturated cases, changing porosity to be to the power of 1.13 instead of 1.0 to match published data.
· A bug was fixed in the vapor diffusion coefficient when using time units of days. The parameter was not converted from seconds to days correctly, resulting in more rapid drying than should happen.
· A bug was fixed in runoff code that would cause an error in some cases if the slope at the right side of the mesh was flat.
· A bug was fixed which caused too much latent heat to be applied at the frost front when using imperial units. (KB544)
· A bug was fixed in the oxygen diffusion coefficient which would give incorrect results for fully saturated cases. (KB521)
· A bug was fixed in the vapor diffusion coefficient which would give incorrect results when using time units of days with dry soils. (KB521)
Note: If you wish to continue running VADOSE/W version 1 on the same computer as GeoStudio 2004 (the next version of VADOSE/W), you will have to upgrade VADOSE/W to version 1.18 or higher.
· A bug was fixed in the LAI function estimation that gave strange results if LAI for a very short growing season was estimated.
· The checkbox “Accumulate flux between time steps” in KeyIn – Flux Section was not being used and has been removed.
· A bug was fixed which caused CONTOUR sketch objects to appear in DEFINE when hitting Undo. (KB503)
·
A bug was fixed (introduced in 5.12)
where a function’s y axis would not be computed properly in some cases when y
values were small (e-5) and included some 0.0 values. (KB505)
· Zoom Objects in CONTOUR would not take pictures into account, so they could end up outside the zoomed area.
· A bug was fixed which could cause SOLVE to continue solving the same time step indefinitely, when using adaptive time stepping under certain conditions.
· A bug was fixed which caused invalid results when the latitude of climate data was more than 65 degrees north.
· When printing transient contours (e.g. the water table at different time steps), the contour lines would be printed very thick. This has been fixed so that the lines now print at the same thickness they appear on screen. (KB499)
· A bug has been fixed which could make it impossible to draw infinite elements.
· A bug has been fixed which would cause the Minimum x and y Problem Extents (under Set – Scale) to be reset.
Please note: This is a VERY IMPORTANT service pack to obtain as the solver in the previous two versions (1.13 & 1.14) had critical undetected bugs.
· Fixed a bug introduced in version 1.14 which would allow time steps to reduce by half if maximum user specified iterations were reached at the same time as the adaptive time stepping routine was trying to pass through a user specified elapsed time. It was possible for the program to keep dividing the remaining time step by half and never reach the user elapsed time.
· Fixed a bug in the algorithm that computes day length sunshine hours. When the user entered a site latitude of more than +/- 65 degrees the algorithm could not compute valid day lengths for part of the year where total sunshine hours equaled 24 hours. The program would compute invalid climate boundary data from this point on in the analysis. The program now checks if the user latitude is too great then it sets it back to the maximum value of 65 degrees.
· Fixed a bug introduced in version 1.12 which resulted in too many adaptive time steps being solved if runoff occurred and the maximum number of runoff seepage review cycles was reached. The solver would repeat time steps and in doing so apply additional water and evaporation. (KB496)
· Fixed a bug in the vegetation routine such that the sum of actual transpiration plus actual evaporation could not be computed to be greater than potential evapotranspiration. (KB495)
· Modified the logic for computing rainfall distribution on sloped ground. Now the projected slope length to a horizontal plane is used for the rainfall amount instead of the actual length of the slope. This results in less water being applied on sloping ground relative to flat ground.
· Improved the adaptive time stepping logic to enhance the speed of the solve process. Now it is recommended to set the maximum iterations per time step to a low number (such as 15 iterations). If the maximum is reached, the solver will halve the time step and try again. It will continue to halve the steps until the user-specified minimum is reached. The main time stepping routine is still used to increase or decrease time steps while the solve proceeds within the allowed iterations.
Please note: Our supplier of the FLEXlm licensing technology has made a change to the system to improve security. Unfortunately this means you will need to acquire a new license file in order to use versions 1.13 and later. Your existing license file will not work after you upgrade to version 1.13. Please contact GEO-SLOPE to have a new (free) license file emailed to you.
· Fixed a bug introduced in version 1.12 which made it impossible to delete a function. (KB490)
· Fixed a bug in the vegetation leaf area index function estimation. Estimating functions over multiple growing seasons did not always work as expected, and could result in an error message. (KB494)
· Modified the hydraulic conductivity value at surface gauss points to permit more rapid wetting up of dry soils during rainfall events.
· Bitmaps contained in background WMFs are now being included in printouts. (KB483)
· WMFs would sometimes be displayed on top of other elements when they should be behind. This has been fixed. (KB484)
· A bug was fixed which could cause some background images to not be displayed. (KB485)
· A bug was fixed which would prevent opening files that were marked as read-only and had been renamed. (KB481)
· A bug has been fixed which could cause the K-sat value to change when switching between log and arithmetic views. (KB487)
· A bug was fixed in CONTOUR which caused it to read an incorrect value for the K-ratio for material properties.
· The K and WC function estimations have been enhanced, so that a good function can be obtained regardless of whether viewing in log or arithmetic scale.
· Snow compaction is no longer computed, to avoid negative snow depths. (KB477)
· The change in heat stored in the bottom layer of snow has been added to the snow base energy balance equation to determine the snow base temperature. (KB478)
· When using modifiers on climate data, VADOSE/W SOLVE was not using the scaled data, it always used the original values. This has been fixed. (KB479)
· Now supports up to 999,999 time steps.
· Thermal conductivity calculation in frozen ground has been improved to avoid a possible discontinuity in function value between the frozen and unfrozen state at a fixed water content. The improvement removes any possibility that the function will be discontinuous at this point. The original Johansen method for unfrozen soil was not consistent with the Johansen method for partially frozen soil. The improvement smoothes the function between frozen and unfrozen zones at the point of freezing.
· A bug was fixed which would cause CONTOUR to display some initial condition values as 0. SOLVE has always been using the correct initial conditions; the bug only caused CONTOUR to display incorrect values.
· A bug was fixed in DEFINE which prevented the function axis from being displayed in Key In – Functions when CONTOUR Sketch Objects was turned off in View – Preferences. (KB467)
· A bug was fixed which caused an error message to be displayed when importing a TEMP/W file. (KB462)
· When drawing multiple elements with the Preview mode turned on, the mesh will now correctly refresh itself when the material number is changed.
· When defining a volumetric water content function, an Mv of 0 is not valid. Previously this invalid data was only caught in the solver. Now it is caught in DEFINE.
· In some configurations, when clicking on an application’s shortcut in the Start menu, Windows Installer would display a message about re-creating the shortcut or fixing the application. In a few cases it would even prompt for the CD. This has been fixed. (KB467)
· When the water content was saved in view log suction mode, the predicted conductivity functions for the Green & Corey or Fredlund & Xing methods could give incorrect Ksat values, depending on the steepness of the function. This has been corrected. (KB462)
· A bug was fixed which would cause CONTOUR to display some initial condition values as 0. SOLVE has always been using the correct initial conditions; the bug only caused CONTOUR to display incorrect values. (KB466)
· A bug was fixed which prevented CONTOUR from opening some files. (KB469)
· A bug was fixed which miscalculated rainfall in some cases. (KB474)
· VADOSE/W has been enhanced to permit simultaneous analysis of oxygen or radon gas transport in response to user input concentration boundary conditions. Please read Chapter 11 in the VADOSE/W manual for more information.
· A bug has been fixed which would cause CONTOUR to shut down without warning if it was not launched from DEFINE.
· When using imperial units, CONTOUR would incorrectly draw the freeze/thaw line at 0 degrees. It now shows it at 32 degrees.
· In some cases with triangular mesh regions, element numbers would change every time the mesh was sorted. This has been fixed. (KB439)
· When some precipitation parameters were entered with imperial units, they were being converted incorrectly to metric before being used in calculations, and therefore incorrect values were used in the solution. This has been fixed.
· When imperial units were used in conjunction with Stop/Restart, some data was not being converted properly. This has been fixed.
· When CONTOUR was launched from DEFINE and DEFINE changed the current file (using File – New or File – Open), changes made in CONTOUR could be lost. This bug has been fixed. (KB400)
· While sketch text was shared between DEFINE and CONTOUR, the custom descriptions for dynamic text was not shared. This bug has been fixed. (KB398)
· Under some versions of Windows, DEFINE could crash while importing climate data. This has been fixed. (KB396)
· Under some versions of Windows, Thermosyphon or Climate analyses could give incorrect results. This has been fixed. (KB397)