News

PetraSim 5.1.1802

June 2, 2011
This release includes bug fixes and enhancements for the TOUGH2 and TOUGH2-MP simulators. Changes since PetraSim 5.1.1710 include: Fixed a bug in TOUGH2 that caused an access violation in models that used more than 4/5 of the maximum number of sources and sinks. Updated TOUGH2 binaries to have a limit of 50,000 sources/sinks and 1 million source/sink history ... Read More...

Pathfinder, De Vest Alkmaar by Van Hooft Adviesburo

May 24, 2011

Simulation from the model of “De Vest Alkmaar” by “Van Hooft Adviesburo” with modifications by Thunderhead to test our latest version of Pathfinder. This is a short evacuation demonstration of 2177 occupants, with our latest behavior models.

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PetraSim 5.1.1710

May 10, 2011

This release includes several fixes to the TOUGH-MP executables included with PetraSim.

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PetraSim 5.1.1621

April 21, 2011

This release is a patch that prevents problems related to the latest ATI graphics card driver and PetraSim’s use of textures (e.g. top images).

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Script Occupant Movement

April 21, 2011
This system can be used to give individual occupants or groups a sequence of intermediate goals that they will follow during the simulation. Read More...

PetraSim 5.1.1605

April 5, 2011

This release fixes two bugs related to the new flux-based boundary condition specification options.

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Dambovita Center, Bucharest, Romania

April 1, 2011

Submission by: Donna Netanel from S. Netanel Engineers and Consulting Ltd and OffStream Studios.

Plaza Centers has entered into a public-private partnership agreement with the Government of Romania to develop the Dambovita Center (known as Casa Radio) (Forum with Additional Images) in Bucharest, the largest development plot available in the city centre.”

The image and models below, created by Donna and Offstream Studios, show a view of the PyroSim model at the top and two Smokeview renders of the Fire Dynamics Simulator (FDS) simulation.  With the excellent use of obstruction transparency and colors, it is easy to visualize smoke movement within the volume of the building.

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PetraSim: Internal regions with DXF geometry from SketchUp.

March 30, 2011

We have posted a short video showing how to create DXF files in SketchUp and then use them to subdivide a PetraSim model into geometric regions. The demo shows how to create a cylinder inside a rectangular model and assign material properties to the cylinder.

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PetraSim 5.1.1524

March 24, 2011
This release adds the capability to specify surface injection and production (source/sink) using flux. The specified flux is multiplied by the projected area on the XY plane to calculate flow. Changes since PetraSim 5.1.1416 include: New capability to specify surface injection and production flux. Added new TOUGH2 example that demonstrates natural state and production analyses using a surface ... Read More...

Pathfinder Performance Improvements

March 7, 2011

We just finished a round of optimization and now we have the data to show that the upcoming version of Pathfinder will be an improvement both in speed and in memory consumption.

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