| authors |
Ozel, Filiz |
| year |
1998 |
| title |
Geometric Modeling intThe Simulation of Fire - Smoke Spread in Buildings |
| source |
II Seminario Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings / ISBN 978-97190-0-X] Mar del Plata (Argentina) 9-11 september 1998, pp. 438-445 |
| summary |
Since the performance simulation of buildings, such as fire/smoke spread, energy loss/gain, acoustics, etc. greatly rely on building geometry, the way the physical environment is modeled can substantially effect the reliability of the predictions made by such simulations. Most computer models that simulate fire and smoke spread in buildings limit the computer representation of the building to simpler geometries and define rooms as rectangular spaces or as spaces with uniform crossections. Such a definition does not account for the variety of building elements that can exist in a building such as large overhangs, half height walls, etc. Existing simulations are typically developed as mathematical models and use the principles of thermodynamics to represent the spread of the elements of fire through space over a given time period. For example, in zone models each room is defined as a two tier space with heat and smoke exchange between lower and upper tiers as the fire progresses. On the other hand, field models divide the space into small contiguous units where thermodynamic state of each unit is calculated as the simulated fire progresses. Dynamic processes such as fire and smoke spread must recognize both intangible (i.e. voids) and tangible (i.e. solids such as walls, balconies, ceiling, etc.) architectural entities. This paper explores the potential of solid modeling techniques in generating geometric definitions for both solid and void architectural entities that can interact With mathematical models of fire/smoke spread in buildings. The implications of cellular spatial partitioning techniques for zone or field models of fire/smoke spread are investigated, and the methods of creating cellular decomposftion models for architectural spaces as well as for spatial boundaries such as walls are explored. The size of each cellular partition, i.e. the resolution of the partition, and the material and heat transfer attributes of each cell were found to be very critical in modeling the spread fire through voids as well as through solids in a building. |
| series |
SIGRADI |
| email |
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| full text |
 file.pdf (115,251 bytes) |
| references |
Content-type: text/plain
|
(19??)
 National Fire Protection Association Handbook
, 17th edition, Battery March Park, MA
|
|
|
|
|
Cooper, L.Y. and Fourney, G.P. (1990)
The Consolidated Fire Model (CCFM) Computer Code Application CCFM.VENTS - Part I Physical Basis
, NISTIR 4342, National Institute of Standards and Technology, Gaithersburg, MD, July 1990
|
|
|
|
|
Cooper, L.Y. and Stroup, D.W. (1985)
ASET-A Computer program for Calculating Available Safe Egress Time
, Fire Safety Journal, Vol.9, 1985, pp. 29-45
|
|
|
|
|
Foley, James, D., Van Dam, A., Feiner, S.K. and Hughes, J.F. (1992)
Computer Graphics: Principles and Practice
, Addison-Wesley Publishing Co., Mass, 1992
|
|
|
|
|
Jones, W.W. and Peacock, R.D. (1989)
Guide for FAST, Version 18
, NIST Technical Note 1262, National Institute of Standards and Technology, Gaithersburg, MD
|
|
|
|
|
Ozel, F. (1987)
The Computer Model BGRAF: A Cognitive Approach to Emergency Egress Simulation
, Un. of Michigan Dissertation, Doctoral Program in Architecture, Ann Arbor, Mi.
|
|
|
|
|
Shaviv, E. and Peleg, U.J. (1991)
An Integrated KB-CAAD System for the Design of Solar and Low Energy Buildings
, Proceedings of CAAD Futures ’91 Conference (ed. Schmidt, G.), Zurich, Switzerland
|
|
|
|
|
Stahl, F.I. (1979)
Final report on BFIRES/Version 1, Computer Simulation of Emergency Egress Behavior During Fires: Calibration and Analysis, NBSIR 791713
, National Bureau of Standards, Fire and Life Safety Program, Washington DC., March 1979
|
|
|
|
|
Turner, J. and Johnson, R. (1984)
BLAST and CAEADS Interface
, Un. of Michigan, College of Arch. and Planning Report
|
|
|
|
|
Turner, J. (1990)
An Application of Geometric Modeling and Ray Tracing to the Visual and Acoustical Analysis of a Municipal Open-air Auditorium
, ACADIA 1990 Proceedings, pp.173-185
|
|
|
|
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2016/03/10 09:57 |
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