After a week of silence with the download available, we would like to officially announce the release of DIVA-3.0! You may wish to view the presentation of new features from DIVA Day 2014: presentation, mp3 audio. DIVA now supports the new LEED v4 daylighting calculations via IES-LM-83's Spatial Daylight Autonomy and Annual Solar Exposure (sDA + ASE) metrics. Also electric lighting is being introduced to DIVA with the ability to load in and position measured electric lighting data via IES files from the DIVA GUI. Please read the information below, and then feel free to test it out. Even if your DIVA-2.0 trial is expired, you can try DIVA-3.0.
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. Users may wish to view our presentation and panel discussion on the new metrics: presentation, mp3 audio.
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.
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.
The installer for DIVA-3.0 should automatically add the toolbar and no longer require the setting of export options in Rhino 5.
- 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.
- Intermediate point-in-time sky models from the CIE have been added.
- Daylight factor values can now be displayed as decimal points.
- Updated Radiance to the latest 4.2.2 version.
- Added support for loading in LEEDv4 Option 2 daylighting compliance, but the simulations are not automated.
- Exterior conditions in DIVA-Thermal calculations corrected (sometimes floors would have outside air rather than group as their exterior condition).
- All units for DIVA-Thermal simulations are kept in SI units.
- Issues sometimes causing very low cooling results on thermal graphs have been fixed.
- 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.
- If Nodes are deleted in Rhino via the delete key and new nodes are created using fewer surfaces, an error no longer occurs running grid-based Metrics.
- A check is added to ensure that weather files are stored in C:\DIVA\WeatherData\.
Note: For 2.0 license holders, these fixes have been applied to the final version of DIVA-2.0 (220.127.116.11).
Download and Installation
As usual, please download DIVA-3.0 from the Solemma website. It is recommended to simply rename any existing C:\DIVA\ folder to something such as C:\DIVA-2.0\ before installing. The installation comes with a license valid for a 30 day trial. If you participated in the beta, you may download a license file which will extend your trial until 7th January.