All cloud solver releases

Release 2026.10.23.13

Can change results

Improvements to air density in external-flow models

An external-flow model now takes its reference air density from the outdoor temperature you set, rather than from a fixed value. We fixed an issue where, on a site warmer or cooler than that fixed value, the outdoor air could behave as if it were rising or sinking on its own, which made some sites hard to solve and could affect the airflow around the building. External-flow results can differ from earlier runs, most on hot sites with light wind. Indoor models run exactly as they did on the release before.
Before meshing, a CRAC Parameter Variation study now checks each cooling-unit airflow in its table and stops when a value is far above what that unit normally carries, which usually means a mistyped value. The study stops before it uses any solve time.
A temperature range you set for the result images is now read the right way round when its top value is entered first, so the legend runs from cold to warm. A range with no width is set aside and the images use the automatic range.
Pressure images of a plane where the pressure barely changes now show the plane’s actual values in the legend.

Results different from an earlier run?

Send us the job number. We’ll tell you which release it ran on, which change it is, and what it means for your model.

Ask about a change