DHS Scholars Internship Fire Research Division - PowerPoint PPT Presentation

1 / 20
About This Presentation
Title:

DHS Scholars Internship Fire Research Division

Description:

Field Model. Divide into small volumes. Partial differential equations ... 2006 Olympic Ice Hockey Stadium, Turin, Italy, Courtesy of Arup. Parking Garage, ... – PowerPoint PPT presentation

Number of Views:25
Avg rating:3.0/5.0
Slides: 21
Provided by: ton67
Category:

less

Transcript and Presenter's Notes

Title: DHS Scholars Internship Fire Research Division


1
DHS Scholars Internship Fire Research Division
  • Tony Le, Drexel University
  • Advisor Dr. Glenn Forney, NIST
  • August 13th, 2007

2
Fire Dynamics Simulator (FDS)
  • Command line based computational fluid dynamics
    model of fire-driven fluid flow
  • Based on Navier-Stokes equations for low-speed,
    thermally-driven flow
  • Emphasis on smoke and heat transport from fires
  • First created in February 2000

3
Computational Fluid Dynamics
  • Field Model
  • Divide into small volumes
  • Partial differential equations
  • Zone Fire Model
  • Divide into two zones
  • Ordinary differential equation

4
  • Simulation Clip

5
Features of FDS
  • Hydrodynamic Model - Navier-Stokes
  • Turbulence treated by Smagorinsky form of Large
    Eddy Simulation (LES)
  • Combustion Model single step chemical reaction
    tracked via a two-parameter mixture fraction
    model
  • Radiation Transport finite volume methods for
    convective transport

6
Features of FDS (cont.)
  • Geometry approximated governing equations of a
    rectilinear mesh
  • Multiple Meshes numerous rectangular meshes
    used for calculations
  • Parallel Processing numerous computers using
    Message Passing Interface (MPI)
  • Boundary Conditions solid surfaces are assigned
    thermal boundary conditions

7
Linux Fire Cluster
  • Current System
  • PERL Script
  • Current Load
  • Temperature
  • Usage
  • User
  • Cumulative
  • System Status

8
Nagios Network Monitoring
  • New System
  • Notifications
  • E-mail
  • SMS (Text Msgs)
  • Temperature
  • System Status
  • Interactive
  • Plug-ins
  • Web-Based Services

9
FDS Graphical User Interface (GUI)
  • Ruby WxRuby

10
SmokeView (SMV)
  • Visualize numerical predictions generated by FDS
  • Displays time-dependent
  • Traces particle flow
  • Animated contour slices of computed gas variables
    and surface data
  • Simulation Clip

11
SmokeView - OpenGL
  • Simulation Clip

12
3D Smoke Animated Isosurfaces
  • Simulation Clip

13
Particle Animation
  • Simulation Clip

14
Temperature Slices
  • Simulation Clip

15
Boundary Temperature
  • Simulation Clip

16
Validation
  • Simulation Clip

17
Real World Models
2006 Olympic Ice Hockey Stadium, Turin, Italy,
Courtesy of Arup
Tank Fire Analysis Combustion Science and
Engineering
NASA Vehicle Assembly Building Kennedy Space
Center courtesy Rolf Jensen
Parking Garage, Courtesy of VTT, Finland
PyroSim, courtesy Thunderhead Engineering
Consultants, Manhattan, Kansas
Courtesy, Schirmer Engineering
18
World Trade Center InvestigationKevin McGrattan,
Chuck Bouldin, Glenn Forney
  • Simulation Clip

19
College Dorm Fire
20
Questions?
http//fire.nist.gov/fds/ http//www.pages.drexel.
edu/ttl28
Write a Comment
User Comments (0)
About PowerShow.com