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Simulex 2002

Computer Models For Fire and Smoke
  • Model Name: SIMULEX
    Version: 2.0
    Classification: Evacuation model
    Very Short Description: A coordinate-based model which calculates the evacuation
    movement of individual people, through a multi-story
    building.

    Modeler(s), Organization(s): Dr. Peter Thompson, IES Ltd, Scotland.

    User’s Guide:
    “Simulex: Evacuation modeling software” supplied with
    the software.

    Technical References:
    Thompson, P.A. and Marchant, E.W., Computer and Fluid
    Modelling of Evacuation, Journal of Safety Science, 18
    (1995), pp 277-289.

    Thompson, P.A. and Marchant, E.W., A Computer Model
    for the Evacuation of Large Building Populations, Fire
    Safety Journal 24 (1995), pp 131-148.

    Thompson, P.A., Wu, J., and Marchant, E.W. Modelling
    Evacuation in Multi-storey Buildings with Simulex, Fire
    Engineers Journal (vol. 56, no. 185), November 1996, pp 611

    Validation References:
    Olsson, P.A. & Regan, M.A., A Comparison between
    actual and predicted evacuation times, 1st International
    Symposium on Human Behaviour in Fire, University of
    Ulster, August 1998.

    Thompson, P.A. and Marchant, E.W. Testing and
    Application of the Computer Model ‘Simulex’, Fire Safety
    Journal 24 (1995), pp 149-166.


    Availability:
    Available from Integrated Environmental Solutions Ltd,
    141 St. James Road, Glasgow, G4 0LT: www.ies4d.com

    Price:
    £1000 for an annual licence, £2600 for a perpetual licence.

    Necessary Hardware:
    Any intel-based PC running a modern 32-bit Microsoft
    operating system (Windows 95, 98, 2000, Windows M.E.)

    Computer Language:
    C/C++

    Size:
    6Mb hard disk space for installation. Minimum 64Mb
    RAM required for large simulations.

    Contact Information:
    Peter Thompson, pete@ies4d.com , +44 (0)141 2263662

    Detailed Description:

    Simulex allows the user to create a 3-D model of a building by using a number of CAD-
    designed floor plans, connected by staircases. Occupants are ‘placed’ into the building
    either one-by-one or as groups. The user defines a number of ‘final’ exits just outside the
    building, and Simulex will automatically calculate all travel distances throughout the
    building space. When the building population has been defined, and travel distances
    calculated, a simulation can be carried out. The user can view an ‘evacuation’ on-screen
    and ‘zoom’ in on areas of interest. It is also possible to record a simulation onto hard disk
    for later ‘real-time’ playback. Simulation and animation occurs in time-steps of 0.1
    seconds.

    The algorithms for the movement of individuals are based on real-life data, collected by
    using computer-based techniques for the analysis of human movement, observed in real-
    life footage. These algorithms have produced realistic parameters of motion for
    individual people moving through different types and geometries of door exits. Simulex
    accurately models the physical shape and motion of each individual person; side-stepping
    and overtaking patterns; speed fluctuations; queuing behaviour; body-twisting, and a
    choice of different exits using the automatic route-assessment functions.

    The fluctuations in walking speed of each individual are modeled, using the relationship
    between inter-person distance and walking speed. Validation tests have been carried out
    which demonstrate that Simulex produces realistic flow rates at complex corridor
    junctions, and also that realistic evacuation times are produced. It is used both in Fire
    Engineering Consultancies and as a teaching aid at a number of universities.

 
 
 
 
 
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