• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.135-138
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• 2011

최근 국내의 경우 FDS를 이용한 성능설계, 화재영향평가 및 피난안전성평가등 다양한 분야에서 활발하게 사용되고 있으며 더불어 제조물책임법(PL법)과 실화책임에 대한 법률등이 새롭게 제정됨에 따라 화재조사 및 감정분야에 화재시물레이션이 적용될것으로 예상됨으로서 이러한 분야에 대한 화재시물레이션의 적용이 큰 이슈로 등장하고 있으며 이에 따라 소방방재청에서도 차세대소방기술에 대한 R&D로서 수행중에 있다. 본 연구는 이러한 상황에서 FDS를 화재조사에 활용함에 따른 문제점과 개선대책을 검토한 것이다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2001.04a
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• pp.241-247
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• 2001

A Fire Safety Evaluation Module(FSEM), which quantitatively evaluates the risk of evacuees when fire occurs in buildings or ships, is presented in this paper. The developed FSEM can be applied to multi-room structure. Basic input data for the FSEM are prepared by fire model and evacuation model. CFAST which is one of the existing fire models is used as fire model and MonteDEM evacuation model was developed for evacuation model, respectively. MonteDEM evacuation model makes use of distinct element method and Monte-Carlo simulation, and it can also take into consideration ground inclination by ship motions in order to simulate the real situation of evacuation. Some typical situations are modelled for illustrative examples and quantitative assessment of evacuee's risk under fire accident is carried out.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.14 no.7
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• pp.584-591
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• 2002

The objective of the present study is to develop a model to predict heat and gas flow movement by fire in a tunnel. The model includes component models such as turbulence model, combustion model, fire model, jet fan model, etc. It has been validated using the data from Memorial Tunnel Fire Ventilation Test Program. The predictions are in good quantitative agreement with the experimental data in the far-field region of the tunnel. It should be further investigated to develop models for radiation between surfaces, for composite boundary conditions for conduction and convection, and for vigorous turbulent mixing in a tunnel especially for a large size of fire.

• Journal of the Korean Society of Safety
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• v.33 no.3
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• pp.21-26
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• 2018

Approximately 20% of the total fire is electrical fire, and electrical energy is a potential source of heat. Large-scale fault currents that occur during a line ground fault flow into electric utility poles, electric power equipment, or electric appliances of the customer, and cause simultaneous electrical fire. In this paper, we investigated the possibility of fire through the change of fault current flowing in faulty and sound feeder in case of 1 line ground fault in 22.9 kV distribution line. We propose a fire investigation analysis method for simultaneous multiple electrical fire such as evidence analysis method, and fault current occurrence confirmation method in case of fire accident by analyzing the fault current occurring in the ground fault in the distribution line using EMTP, electric power system analysis program.

• Fire Science and Engineering
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• v.10 no.3
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• pp.41-50
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• 1996

In many of the developed countries, there have been continuous offers to observe and understand the fire phenomenon for the establishment of fire safety and the development of fire protection technology. In the past, full scale fire experiments have been conducted for the development of the construction technology and the design methods in order to secure the safety of the buildings and the people as well. This study aims at the statistics concerning the structural vulnerablity parts based on the full scale fire experiment in one of the apartment buildings that represents the average households in Korea, thereby acquring the experimental technology, and the basic data needed for the prediction of enclosure fire phenomenon which is critical for the establishment of evalution methods through simulation, and has also presents secured problems concerning the balcony structure and the window types that requires imediate improvement.

• Journal of the Korea Institute of Military Science and Technology
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• v.3 no.1
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• pp.13-25
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• 2000

A simulation model is developed to analyze the large-structure driving system and its integrated behavior in the whole weapon system. It models every component in the driving system such as mechanical and electrical characteristics, and it is programmed by simulation language in a way which strongly reflects the system's real time dynamics and reduces computation time as well. A useful parameter identification method is proposed, and it is tuned on the given physical system. The model is validated through comparing to real test, and it is applied to analysis and prediction of integrated system functions relating to the fire control system.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.207-212
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• 2006

In this study we conducted computer simulation with FDS V4.0.5 for the subway carriage of Seoul Metro to the replacement of interior materials. We tried to use the real data for the simulation by testing the interior materials in our Lab. From the result of the simulation we could confirm the fire resistance of the new interior replaced car to the chosen arson scenario case.

• Journal of Aerospace System Engineering
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• v.3 no.4
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• pp.41-49
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• 2009

This paper present result of numerical simulation of premixed combustion around a triangle Bluff Body. And a numerical simulation of a premixed flame stabilization by a bluff body was performed using LES Model. The calculated results from the LES showed a good agreement with experiment data than k-model. Premixture combustion has flammability limit, quenching distance, smallest ignition energy has the combustion quality of the back. Bluff body makes a recirculation zone. Therefor velocity of behind bluff body is very slow. It was caused by slowly position speed and the fire occurred after the Bluff Body. Occurrence of fire it made the waste gas of high speed and the thrust made well.

• Fire Science and Engineering
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• v.27 no.4
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• pp.27-34
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• 2013

The high prediction performance of fire detector models is essentially needed to assure the reliability of fire and evacuation modeling in the process of PBD (Performance Based fire safety Design). The main objective of the present study is to measure input information in order to predict the accurate activation time of smoke detector into a Large Eddy Simulation (LES) fire model such as FDS (Fire Dynamics Simulator). To end this, FDE (Fire Detector Evaluator) which can measure the device properties of detector was developed, and the input information of Heskestad and Cleary's models was measured for a ionization smoke detector. In addition, the activation times of smoke detectors predicted using default values into FDS and measured values in the present study were systematically compared. As a result, the device properties of smoke detector examined in the present study showed a significant difference compared to the default values used into FDS, which resulted in the considerable difference of up to 15 minutes or more in terms of the activation time of smoke detector. The database (DB) on device properties of various smoke and heat detectors will be built to improve the reliability of PBD in future studies.

• 방재와보험
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• s.17
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• pp.42-45
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• 1982