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TUFLOW Version Backward Compatibility: Difference between revisions

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| rowspan=1|2013-12-AA
| New default settings – see <font color="blue"><u>Defaults == PRE 2013-12</u></font> for a list of the commands that have changed in their default setting.
| Set <font color="blue"><u>Defaults == PRE 2013-12</u></font> if similar results are required to the 2012-05 release.
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| rowspan=1|2013-12-AC
| The default setting for <font color="blue"><u>Link 2D2D Approach</u></font> has changed.
| Set <font color="blue"><u>Link 2D2D Approach == METHOD B</u></font> to achieve the same results as Builds 2013-12-AA and 2013-12-AB. See Link 2D2D Approach for more information.
 
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| rowspan=2| 2012-05-AA
| New default settings – see <font color="blue"><u>Defaults == PRE 2012-05</u></font> for a list of the commands that have changed in their default setting.
| Set <font color="blue"><u>Defaults == PRE 2012-05</u></font> if similar results are required to the 2011-09 or 2010-10 releases.
|-
| The approach to the sizing of automatic manholes and the application of losses has been enhanced.
| Set <font color="blue"><u>Manhole Approach == Method A</u></font> to achieve the same results as Build 2011-09-AA.
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| w32 and w64 versions will give slightly different results for the same simulation.
| No workaround. Use the same platform (w32 or w64) for all simulations. Use <font color="blue"><u>Model Platform</u></font> to force which platform should be used.
|-
| New default settings – see <font color="blue"><u>Defaults == PRE 2010-10</u></font> for a list of the commands that have changed in their default setting.
| Set Defaults == PRE 2010-10 if similar results are required to the 2008-08 or 2009 07 releases.
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| rowspan=1| 2008-08-AC
| The default setting for <font color="blue"><u>Shallow Depth Stability Factor</u></font> has changed.
| Set <font color="blue"><u>Shallow Depth Stability Factor == 3</u></font> for models without direct rainfall to achieve the same results as Builds 2008-08-AA and 2008-08-AB. See <font color="blue"><u>Shallow Depth Stability Factor</u></font> for more information.
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| rowspan=8| 2008-08-AA
|-
| Uses a new set of defaults for a number of commands (see <font color="blue"><u>Defaults</u></font> ).
| The new defaults produce slightly different results, and very slight differences also occur between the three versions offered. For established models run using the 2007-07-XX builds, use <font color="blue"><u>Defaults == PRE 2008-08</u></font> to use the default settings used by the 2007-07-XX builds. Testing of a range of models has shown zero change in results if <font color="blue"><u>Defaults == PRE 2008-08</u></font> switch is set, and the Compaq Fortran compiled version (cSP) is used. Each of the new default settings and their effects are discussed in the rows below.
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| The method for interpolating n values where the 2D Manning’s n varies with depth has been enhanced from a linear interpolation of the M (1/n) value to a spline interpolation of the n value. See <font color="blue"><u>Bed Resistance Depth Interpolation</u></font>.
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| rowspan=12| 2007-07-AA
|-
| Uses a new set of defaults for a number of commands (see <font color="blue">Defaults<u/font>Defaults).
| The new defaults may produce slightly different results. For established models run using the 2006-06-XX builds, use <font color="blue">Defaults == PRE 2007-07-AA</font> to use the default settings used by the 2006-06-XX builds. Testing of a range of models has shown zero change in results if Defaults == PRE 2007-07-AA switch is set. Each of the new default settings and their affects are discussed in the rows below.
|-
| Change <font color="blue">Zero Material Values to One == OFF</font> (previously ON)
| Will not cause different results if a Set Mat == 1 is specified before other material settings in the .tgc file, or if every cell has been assigned a material value.
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| <font color="blue"><u>Inside Region == Method B</u></font> (previously Method A)
| Testing thus far has not shown any difference between the two methods (other than the substantial gains in processing time of polygons).
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| <font color="blue"><u>Line Cell Selection == Method D</u></font> (previously Method C)
| May change results slightly, but improved stability and a smoother water levels along HX lines result.
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| <font color="blue"><u>VG Z Adjustment == MAX ZC</u></font> (previously ZC)
| May change results slightly, but stability should be significantly enhanced in some situations.
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| <font color="blue"><u>Bed Resistance Cell Sides == INTERROGATE</u></font> (previously AVERAGE M)
| Will influence results, usually slightly, but more pronounced where there are sudden changes in Manning’s n values such as in the urban environment.
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