Pathfinder 2011 Beta 2, Progress
The second development phase for Pathfinder 2011 is underway. We’ve already made good progress on waypoint scripting and we’ve also made some changes to enable parallel processing. … Continue Reading
Pathfinder Case Study, Door Selection
Recent Pathfinder development has been, to a large extent, focused on our new Locally Quickest approach to controlling how an occupant moves out of its current room. One of the toughest challenges during this sort of simulator development is identifying what the simulator should do. … Continue Reading
PetraSim 5.1.1416
This release fixes a bug related production boundary conditions in TOUGHREACT and improves the input file reader in TMVOC. … Continue Reading
Pathfinder 2011.0.0215 (Beta)
This release is an update to the Pathfinder 2011 Beta. This version includes changes that improve local door selection in SFPE mode. Now, occupants estimate queue sizes rather than sample density along proposed local door routes. This queue size estimate is now used in steering mode simulations as well.
Pathfinder 2011.0.0210 (Beta)
Pathfinder 2011 is now available for beta testing. This version includes our new Locally Quickest path selection algorithm and an improved exit specification model. This version has not been run against our V&V test set and is not recommended for “real world” use.
PetraSim 5.1.1408
This release fixes a bug in PetraSim’s Load Well Flow Rates feature and includes several other minor improvements. … Continue Reading
PyroSim 2010.2.1407
This minor update to PyroSim fixes an installer error reported against the previous release. … Continue Reading
Pathfinder: Density and Voronoi Tesselation
Although still neat, this information is out of date and we are now using a queue count for the locally quickest choice.
To support Pathfinder’s upcoming locally quickest path system, we needed a way to compare the time it would take to walk to different doors within an occupant’s room. The usual way to estimate an occupant’s velocity is to use a function of density. However, in order to use density we needed to add a system to Pathfinder to measure density at a much finer resolution … Continue Reading
PetraSim 5.1.1402
This release fixes a TOUGHREACT input file format error. In models that contained more than one linear Kd zone, PetraSim was omitting the zone terminating asterisk – causing TOUGHREACT to halt prematurely. This update corrects the formatting error, allowing TOUGHREACT models with multiple linear Kd zones.