In preparation for DIVA Day 2014, we are pleased to announce the alpha release of DIVA version 3.0! With this update, DIVA supports the new LEED v4 metric via IES-LM-83's sDA metric. Also electric lighting is coming to DIVA with the ability to load in and position measured electric lighting data via IES files in the DIVA GUI. Please read the information below, and then feel free to try it out. Even if your DIVA-2.0 trial is expired, you can try DIVA-3.0.

It is recommended to simply rename your existing C:\DIVA\ folder to something such as C:\DIVA-2.0\ before installing the alpha. That way if you want to go back to DIVA-2.0, all you need to do is delete the 3.0 DIVA folder and rename the 2.0 folder back to C:\DIVA\. The installation comes with a license valid until Oct 15 2014 (two weeks after DIVA Day 2014). Existing DIVA-2.0 permanent and student licenses will not work with the alpha version.

sDA + ASE / LEED v4

DIVA finally supports the IES-LM-83 sDA and ASE metrics for the LEEDv4 daylight credit as well as standalone simulations and visualizations of the two metrics. The new sDA / ASE calculations are accessed from the Nodes > Climate-Based selection from the Metrics menu. Upon running a sDA or LEEDv4 metric, you will be prompted to set control groups. In the two examples below, there are 8: one for each space or room. The sDA calculations close window shades using the conceptual Daysim methodology (0% of direct transmittance, 25% of diffuse transmittance) whenever more than 2% of the floor area of a control group has direct sunlight over 1000 lx present. The ASE calculations are made using a 0 ambient bounce calculation only, accounting for direct sunlight.

Loading IES files into DIVA for electric lighting analysis
Clicking Materials > Load IES File will prompt you to select an IES file from somewhere on your computer. Upon doing so, DIVA will create a block on a special Luminaires layer. You can copy, rotate, and translate geometry on this layer (but not scale or mirror!) and it will show up in point-in-time calculations such as grid-based illuminance and visualizations. To see only the contribution of electric lighting, set the hour time to something in the middle of the night such as 23h.

Bug fixes which will also be applied to DIVA-2.0 after testing
- Exterior conditions in DIVA-Thermal calculations corrected (sometimes floors would have outside air rather than group as their exterior condition).

- Added conversions for ton-hrs of cooling in DIVA-Thermal calculations. Sometimes this would result in seemingly very low cooling results on graphs.
- Daylight factor values can be displayed as decimal points now.
- Updated Radiance to the latest 4.2 version.


As usual, please download the alpha version from the Solemma website. Please post any feedback here or send an email to Alstan.

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Comment by J. Alstan Jakubiec on October 12, 2014 at 3:41am

Updates: Beta Version -- DIVA

The second trial version,, of DIVA 3 was just uploaded to our download webpage. Look forward to more updates in the coming weeks.

Updates include,

- The Beta license is valid until 15 November 2014.

- Rhino 4 support has been discontinued. With DIVA-3.0 there is no longer a need to set your OBJ export settings.

- sDA shading controls can be set directly from the toolbar Materials button without having to run a simulation. When running a sDA / ASE calculation, only if control groups are not set will DIVA ask you to set the sDA shading controls.

- The buttons for add control group and submit in the sDA shading controls menu have been moved to the top of the menu such that dealing with large numbers of control groups is easier.

- New default materials have been added to reflect the IES-LM-83 default recommendations for unknown reflectances.

- LEEDv4 Option 2 daylighting compliance has a customized load-in display mode, but is not available from the Metrics menu as an automated simulation workflow at this time.

- The LEED2009 Addendum 8.1 credit is now named unambiguously in the interface.

- The dt (direct threshold) value for climate-based Daysim simulations is now set to 0.

Bugfixes include,

- The associated files for the generic translucent 20% material were not included with the previous installer.

- All units for DIVA-Thermal simulations are kept in SI units.

- When selecting sDA control groups, choosing 0 nodes no longer causes the function to exit.

Comment by J. Alstan Jakubiec on November 13, 2014 at 7:39pm

Updates: Beta Version -- DIVA

The third trial version,, of DIVA 3 was just released. This likely the last beta release before the final commercial release.

Updates include,

- The updated license is valid until the 15th of December.

- Intermediate point-in-time sky models from the CIE have been added.

- All IES files can now be loaded into DIVA, including point sources and cylindrical sources.

Bugfixes include,

- A bug in displaying LEED 8.1 results was fixed.

- Calculating detailed dynamic shading devices is possible again.


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