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Topics - Charlie Thornton

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1
Pathfinder / Pathfinder Stadium Evacuation Video
« on: July 17, 2014, 08:39:46 am »
We've had an architecture student intern, Brandon Lambrecht, at Thunderhead for a couple summers and one of his projects has been to design a 50,000 occupant stadium that we can use to demonstrate Pathfinder. We're planning to post the PTH files and a writeup soon. Here is the first video: https://www.youtube.com/watch?v=c6unBZoY9Ag

2
Pathfinder / Fire and Evacuation Modeling Technical Conference 2014
« on: February 25, 2014, 11:00:58 am »
Thunderhead Engineering is hosting the 2nd Fire and Evacuation Modeling Technical Conference on September 8-10, 2014 in Gaithersburg, Maryland. This conference will be focused on Fire and Evacuation Modeling to encourage continued communication and collaboration with others in the field. We have planned two days of technical presentations on fire and evacuation modeling (September 8-9), with an optional third day of workshop classes on PyroSim and Pathfinder (September 10).

Learn more: http://www.thunderheadeng.com/femtc-2014/

3
PyroSim / Fire and Evacuation Modeling Technical Conference 2014
« on: February 25, 2014, 10:59:41 am »
Thunderhead Engineering is hosting the 2nd Fire and Evacuation Modeling Technical Conference on September 8-10, 2014 in Gaithersburg, Maryland. This conference will be focused on Fire and Evacuation Modeling to encourage continued communication and collaboration with others in the field. We have planned two days of technical presentations on fire and evacuation modeling (September 8-9), with an optional third day of workshop classes on PyroSim and Pathfinder (September 10).

Learn more: http://www.thunderheadeng.com/femtc-2014/

4
PyroSim / PyroSim 2014.1.0110
« on: January 10, 2014, 11:24:22 am »
Release Notes for PyroSim 2014.1.0110:

This is a maintenance release of PyroSim. This version fixes bugs related to support for FDS6 and HVAC.

To download the new version of PyroSim, please visit the download page provided when you purchased PyroSim or register for a free 30-day trial. Members of the PyroSim mailing list will receive an email containing a summary of changes and a link to the download page.

This version of PyroSim is designed for FDS version 6.0.1 and Smokeview version 6.1.5. It uses version 1.6.0_45 of the Java VM.

Changes since PyroSim 2013.1.1220:
  • Removed deprecated FDS5 quantity MASS_LOSS.
  • The THERMOCOUPLE quantity can now only be used with devices.
  • Fixed a bug that prevented some files created with PyroSim 2013.1.1122 (beta) from loading.
  • Fixed incorrect unit for HVAC parameter COOLANT_SPECIFIC_HEAT — was j/kg*K, now kj/kg*K.
  • Fixed incorrect unit for HVAC parameter FIXED_Q — was j/s, now kj/s.
  • Fixed incorrect unit for HVAC parameter COOLANT_TEMPERATURE — was K, now C.
  • Changed the default HVAC DUCT parameter ROUGHNESS from 0.0 m to 0.001 m. The new default helps to prevent numerical instability in problems that do not specify loss terms.
  • Fixed a bug that made it possible to specify both molecular weight and formula for a species.
  • Added support for parameter overrides in lumped species specification.
  • Editing preferences will no longer trigger the modified status of the current model.
  • In the Tree view, adding a subgroup under the Reactions group no longer causes a crash.
  • Fixed a bug with HVAC device measurement quantities.
  • Fixed a bug where the FDS6 PARTICLE_FLUX quantities were being called DROPLET_FLUX.
  • Fixed a bug that caused incorrect import of surfaces with particle injection when DT_INSERT was not defined.

5
PyroSim / PyroSim 2013 "Create Process failed"
« on: November 22, 2013, 10:21:44 am »
A "Create Process failed" error has been reported by 3 users the PyroSim 2013 alpha release. I haven't been able to reproduce the problem yet. It appears to only affect the 32-bit version of PyroSim 2013.

If you are trying an early release of PyroSim 2013 and are finding this problem, please share your: operating system, 32-or 64-bit, the specific version of PyroSim you are using (from Help About), and how often the problem occurs (e.g. every time, occasionally, etc).

6
Pathfinder / Pathfinder 2013.1.0730 (Beta)
« on: July 30, 2013, 09:20:01 am »
Pathfinder 2013 is now available for beta testing. This version gives the user more control over simulation geometry and movement (e.g. one way doors, door flow rate limits in steering mode),  occupant-specific output data, better 3D results performance, and more.

For more information, see the release note:

http://www.thunderheadeng.com/2013/07/pathfinder-2013-1-0730-beta/

7
Pathfinder / Pathfinder 2011
« on: July 13, 2011, 07:43:09 am »
Pathfinder 2011 has been released. This version of Pathfinder adds support for elevators and behavior scripting, runs the updated solver in parallel, and adds a new room-level path planning system to improve local wayfinding.

You can learn more and download a free 30-day trial at:

http://www.thunderheadeng.com/pathfinder/

8
Pathfinder / Pathfinder 2011.0.0420 (Beta)
« on: April 20, 2011, 09:10:16 am »
We just posted an updated beta, Pathfinder 2011.0.0420.

This release is an update to the Pathfinder 2011 Beta. This version introduces movement/waypoint scripting (behaviors) and parallel processing. This version also includes additional 3D models including several casual models and a firefighter model.

Release Notes: http://www.thunderheadeng.com/2011/04/pathfinder-2011-0-0420-beta/

A download link (and license key) is in the release notes. If you try it out, please post feedback hear on in a new topic. You can also email support@thunderheadeng.com

We are planning one more beta development cycle - primarily to add elevator support. After that, we'll probably do any needed bug fixes and post the final release.

9
Pathfinder / Pathfinder 2011-0-0215 Beta
« on: February 23, 2011, 10:11:09 am »
Beta testers, please post comments for this beta release in this thread.

10
Pathfinder / Pathfinder Door Selection, Case Study
« on: February 16, 2011, 05:00:08 pm »
I posted a new case study to the Pathfinder dev blog. It''s based on a VTT door selection study and tests the new door selection algorithm:

http://www.thunderheadeng.com/2011/02/pathfinder-case-study-door-selection/

11
Pathfinder / Pathfinder 2011.0.0210 (Beta)
« on: February 11, 2011, 08:51:51 am »
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.

To learn more, please visit the release notes:

http://www.thunderheadeng.com/2011/02/pathfinder-2011-0-0210-beta/

If you have any comments, find any problems, or anything else - e.g. "I downloaded, installed, then never used it, but the installer worked great!" or "I ran it, but I dislike blue circles, so I un-installed.") - please let us know by responding to this topic, starting a new topic, or sending email to support@thunderheadeng.com.

12
Pathfinder / Locally Quickest Paths
« on: January 20, 2011, 11:41:47 am »
I posted some information on our fix for Pathfinder 2009''s "divided door" bug. Video included.

http://www.thunderheadeng.com/2011/01/locally-quickest-paths/

13
PyroSim / Recent Spam Problems
« on: December 08, 2010, 09:45:54 am »
You''ve probably noticed that we''ve been getting a lot of spam lately. It built up over the last weekend because I was out of the office when it surged for one reason or another. My system to control the problem so far has been to ban spammers and delete their posts. Unfortunately, I think that my (non-automated) process is no longer keeping up.

As of yesterday, we were about a month behind on a forum software update. I updated the forum software, but unfortunately this morning there were still some new spam posts. I''ve read that the beta 2.0 version of this forum software is a little stronger against spam bots. If I can''t find an add-on or something to improve bot detection until 2.0 is out of beta, I''ll probably update.

We will work something out. Thank you for using the forum and I hope we can clamp this down soon.

- Charlie

14
Pathfinder / [ignore] test post to debug "too many quotes" issue
« on: April 26, 2010, 08:02:03 am »
Single quotes are being replaced by double quotes:

Why can''t I have pizza every day?

Double quotes are being replaced by double, double quotes:

And then she said, "You should try it with lettuce!"

15
Pathfinder / Pathfinder 2009.2 Available
« on: October 14, 2009, 08:21:07 am »
We have posted an update for Pathfinder 2009.  Some of the key updates include:

  • Now Pathfinder can import PSM files created by PyroSim 2010
  • Improvements to the floor extraction tool (faster, less memory)
  • Adding occupants in tight, narrow spaces is now much easier

There are also several bug fixes related to single-step stairways (common in stadium models).

For a full list of new features and bug fixes, please view the release notes:

http://www.thunderheadeng.com/category/pathfinder-release-notes/

You can download a free trial from the Pathfinder page:

http://www.thunderheadeng.com/pathfinder/

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