Version: 2023.2
August 16, 2023
This version of PyroSim is designed for FDS version 6.8.0 and uses version 11.0.16_8 of the OpenJDK Java VM.
The latest FDS release added a new feature called HVAC Waypoints. This feature lets you define the path of physical ducts in 3D space and link them to a duct in the simplified 'node-network' HVAC submodel. Currently, this feature is utilized to visualize the path in Smokeview. In the future, support will also be added to display this information in Results.
The previous FDS release added a new feature that automatically creates pressure zones in disconnected volumes to improve simulation stability. However this feature caused problems for models with small empty spaces, like those between floors or inside walls, resulting in errors and numerical instabilities. The FDS 6.8+ release fixed this problem by allowing users to set a minimum zone volume threshold. This threshold determines the size at which blanking cells are used instead of creating a very small pressure zone. In PyroSim, you can now adjust this threshold value and also turn off the automatic pressure zone creation function.
We updated PyroSim's 3D Heat Transfer (HT3D) by improving the 'Layered Surface' type. Instead of having to select a separate surface type, you can now select the Heat Transfer Model that best fits your requirements from inside of a Layered Surface. For the 3D option, you can specify multiple material components within a single 'layer' for that surface type. If you have multiple layered surfaces, you can choose between the default 1D option or the 3D option, where heat transfer is restricted to the surface's normal direction.
Another improvement is that PyroSim will use the smallest mesh cell size in the model as the starting point or default value for the 3D Heat Transfer cell size. You can edit this later, but it provides a good basis for transferring heat between the gas and solid surface.
The latest FDS release significantly expands the built-in database of recognized gas species. PyroSim now offers a convenient search feature for creating these new species. Additionally, PyroSim has been improved to automatically generate a fuel species based on a specified formula in a reaction. This enhancement helps ensure that your models are compatible with a recent breaking change in FDS. Now, all reactions must reference a fuel species and cannot define the fuel molecule within the reaction itself.
There have been a number of improvements to the look of PyroSim, Pathfinder and Ventus.
This includes a new default theme for all products. In addition, a modern look and feel, the new theme improves support for multiple monitors with different display scales.
Additionally, all products now use the native Windows File Chooser for file opens and saves. This enhances integration with cloud-based document management systems and enables users to quickly find files by copying and pasting file paths.
Output->HVAC Output
).
Currently, these can only be visualized in Smokeview.Heat Transfer 3D
as a dedicated Surface type.Theme
menu to the View menu.100%
.100%
.Output Cell Region
to the View options to change the visibility of output data in gas-phase cells, solid-phase, or both.Use one of the links below for information about activating your license
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