• Title, Summary, Keyword: Fire simulation

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Fire Simulations (화재시뮬레이션)

  • Kim Sang-Moon;Yoon Sang-Youl;Kim Kyung-Chun
    • Journal of the Korean Society of Visualization
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    • v.4 no.1
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    • pp.8-13
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    • 2006
  • Fire simulation has been developed for decades to analyze fire cases and provide a tool to study fundamental fire dynamics and combustion. There are three way of fire simulation which are a full scale simulation, an experimental simulation and a computational simulation. In case of a full scale simulation, because a higher cost, a higher risk, more efforts are needed, a demand for it has been decreased. But recently a demand for an experimental simulation and a computational simulation has been increased. A computational simulation has several advantages; lower cost, short period, many case studies, more visual results, a quantitative result and etc. FDS(Fire Dynamics Simulator) which has been developed in BFRL(Building and Fire Research Laboratory), NIST(National Institute of Standards and Technology) is a popular world wide code for fire simulation. Lack of accurate predictions by the model could lead to erroneous conclusions with regard to fire safety. All results should be evaluated by the informed judgment of the qualified user.

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A Fire Computer Simulation of Inner Space with Fire Shutters and Refuge Stairs (방화셔터와 피난계단이 존재하는 실내 환경의 화재 컴퓨터 시뮬레이션)

  • Yoo, Doo-Yul;Yang, Jung-Min
    • The Journal of the Korea institute of electronic communication sciences
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    • v.8 no.11
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    • pp.1617-1624
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    • 2013
  • This paper analyzes the relation between fire shutters and fire spread by conducting fire simulation on inner space with fire shutters. Using Fire Dynamics Simulator (FDS), a commercial fire simulation software, the simulation is done on an ideal inner robby, where fire size and the open/close of fire shutters are varied. Our simulation environment can derive significant fire parameters such as temperature variation of fire room walls and entrances of refuge stairs, variation of carbon dioxide, and soot spread. According to the simulation results, temperature and carbon dioxide distribution in refuge stairs have little dependence on vent open or close, but the part close of fire shutters blocks soot inflow to refuge stairs.

Numerical Simulation of a Forest Fire Spread (산불 전파의 수치 시뮬레이션)

  • Lee, Myung-Sung;Won, Chan-Shik;Hur, Nahm-Keon
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.20 no.2
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    • pp.137-143
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    • 2008
  • In the present study, a forest fire spread was simulated with a three-dimensional, fully-transient, physics-based, computer simulation program. Physics-based fire simulation is based on the governing equations of fluid dynamics, combustion and heat transfer. The focus of the present study is to perform parametric study to simulate fire spread through flat and inclined wildland with vegetative fuels like trees or grass. The fire simulation was performed in the range of the wind speeds and degrees of inclination. From the results, the effect of the various parameters of the forest fire on the fire spread behavior was analyzed for the future use of the simulation in the prediction of fire behavior in the complex terrain.

A Study on the Analysis and Application of the Fire Simulation Tools for Ships (선박화재 시뮬레이션을 위한 도구 분석과 적용에 관한 연구)

  • Choi, Jin;Lee, Dong-Kon;Park, Beom-Jin
    • Journal of the Society of Naval Architects of Korea
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    • v.44 no.2
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    • pp.83-92
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    • 2007
  • To improve the fire safety of ships, it is required to prepare the systematic design guideline for fire protection and the way of assessing fire characteristics quantitatively. The introduction of simulation technique based on fire engineering is useful to assess fire safety performance quantitatively. Fire simulation tools are currently developing with U.S.A., Europe and Japan as a leader. Most of current fire simulation tools were developed for building or inland structure. Therefore it is required validation process and development of data base to apply maritime environments. In this paper, I/O parameters of simulation tools such as CFAST and BRI2002 of zone model and FDS and KFX of field model analysed, and designed data base considering maritime environment. The fire simulation for the pool fire model of engine room and its adjacent compartments is performed and evaluated the results.

Applying to simulation analysis for predicting the combustion performance of Large scale fire tests (실대화재시험의 연소성능 예측을 위한 시뮬레이션 적용)

  • Kim, Woon-Hyung;Park, Kye-Won;Jeong, Jae-Gun;Im, Hong-Soon
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • pp.86-92
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    • 2008
  • On this study, modeling works using Cone tools simulation method were made for the prediction of real fire test results such as small to large scale fire tests including ISO 5660-1, EN 13823 and ISO 13784-1. For those simulation prediction, three real fire tests were performed in advance. In addition, Real data from ISO 5660-1 test were applied to this simulation modeling. Finally, the comparative analysis between Real fire tests and Simulation results were made out. Also, the Classifying evaluation by EURO Class using EN 13501-1 were taken off.

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Modeling and Analysis for Efficient Joint Combat Fire Operation of Army Artillery and Army Aviation (효율적인 육군항공과 포병자산의 통합화력 운용방안 판단을 위한 모델링 방법론 및 분석)

  • Lim, Jong-Won;Kwon, Hyog-Lae;Lee, Tae-Eog
    • Journal of the Korea Society for Simulation
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    • v.23 no.2
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    • pp.47-55
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    • 2014
  • Most combat simulation models, including Korean Army's combat models for simulation analysis, have too much limitations to be used for analysis of complex combats like joint combat fires. We analyze requirements for modeling and simulation of Fire-Eagle, which is a joint combat fire model of ground combat fires and army aviation. We then propose a simulation model for Fire Eagle and derive operational strategies for improving the joint combat fire. To do these, we analyze effectiveness of specific operational plans and scenarios by using the simulation model. We demonstrate ways of developing efficient and effective operational plans from the simulation experimental results.

Analysis on the Implementation Status of Domestic PBD (Performance Based Design) - Focusing on the Fire Scenario and Simulation (국내 성능위주설계의 시행현황 분석 - 화재시나리오 및 시뮬레이션을 중심으로)

  • An, Sung-Ho;Mun, Sun-Yeo;Ryu, Ill-Hyun;Choi, Jun-Ho;Hwang, Cheol-Hong
    • Journal of the Korean Society of Safety
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    • v.32 no.5
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    • pp.32-40
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    • 2017
  • The current status of Performance-Based Design (PBD) implemented in 4 wide areas (Seoul, Gyeonggi, Incheon and Busan) over the past 5 years was reviewed with regard to the number of PBD implementation and target buildings. Then, detailed status related to fire scenarios, input information for fire simulation, and grid size were analyzed with the pre-review for the PBD. As a result, the domestic PBD was mainly applied to the mixed occupancy. In the fire simulations performed on the identical fire scenario and fire space, the maximum heat release rate (HRR) varied significantly depending on the PBD designer. Various combustibles were also considered for the identical fire source, and their combustion properties also showed considerable uncertainty. In addition, the applicability of accurate input information for predictive models of heat and smoke detectors was examined. Finally, the average grid size for the fire simulation using Fire Dynamics Simulator (FDS) was analyzed, and the improvement of PBD to minimize designer dependency was proposed.

A Study on the Arson Fire Characteristics based on Domestic Fire Statistics and Computer Simulation (국내화재통계 및 컴퓨터 시뮬레이션에 의한 방화화재 특성에 관한 연구)

  • Choi, Jin;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.10 no.1
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    • pp.1-10
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    • 2008
  • With the development of the Korean economy, the number of arson fire has been radically increased and become a huge problem and issue in Korea Society for last several decades. This study is to establish the fire life safety strategy regarding the arson fire through researching domestic fire statistics and performing the computer simulation based on fire scenarios with cutting edge techniques and methods for fire characteristics and fire dynamic. In addition, to design the fire life safety strategy depending on the arson fire pattern, the flow and characteristics of fire flames and smoke are analyzed by the computer modeling.

The Comparative Analysis of Passenger Evacuation Results Using CFAST and FLUENT (CFAST 와 FLUENT 화재유동해석을 통한 승객피난 시뮬레이션 결과 비교분석)

  • Jang, Yong-Jun;Park, Won-Hee;Jung, Woo-Sung;Lee, Chang-Hyun
    • Proceedings of the KSR Conference
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    • pp.1354-1361
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    • 2007
  • The evacuation simulation study was performed with the boundary condition of a fire simulator, referring to Dae-gu Subway Fire Accident which was a real station fire. The subway station was modelled from B3F station building to B2F waiting room in fire simulation. Also, a fire simulation were performed with CFAST and FLUENT. In CFAST, the total 29 zones were divided into 18 station buildings in B3F and 11 station buildings in B2F. In FLUENT, the simulated space had the same establishment as zone of CFAST. The study focused on possibility for application of fire simulation in underground station by comparing the resulted values from two simulators. For application of fire effect, the fire data were loaded directly to EXODUS in the case of CFAST and performed a passenger evacuation simulation. In the case of FLUENT, Out Data values of a fire simulation were difficult to be compatible with EXODUS. Two resulted values of passenger evacuation simulation by fire simulation were compared with the Dae-gu Subway Fire Accident in reality.

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A Investigation Study on the Development of Egress Simulation for Evacuation Safety Evaluation of Tokyo Fire Dept. Department in Japan (일본 동경소방청의 피난안정성평가 시뮬레이션 기술개발 사례연구)

  • Lee, Hyun-Jin;Seo, Dong-Goo;Kwon, Young-Jin
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • pp.216-222
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    • 2008
  • A large number of Computer-based fire growth and Evacuation model have been developed for various purpose and many of these are widely used for research and engineering. And Most of Egress simulation program are ordinary case only related to human behavior But Egress safety Evaluation is very closed to smog movement. It is well known that the Egress simulation program made by Tokyo Fire Department are related to smog movement. So It is the aim of this study to investigate on the Development of Egress Simulation for Evacuation Safety Evaluation of Tokyo Fire Dept. Department in Japan.

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