A Study on Testing Floor Materials to Improve Fire Scene Investigation by using Fire Dynamic Simulation

• Main Authors: Yu-Hsiang Huang, 黃育祥
• Other Authors: Ching-Yuan Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/07265265695539383432

博士 === 國立臺灣科技大學 === 建築系 === 98 === For the past few decades, scientists, experts, engineers, architects and fire scene investigators have completed much effort to find out how the fire plumes, such as flame, smoke and heat, be operated in a fire. Fire scene reconstruction is to provide scientific evidence for fire investigation. This article explains how the fire scene reconstruction has revolutionized by combining the usage of Computation Fluid Dynamic (CFD) simulation, fire dynamics equations, and investigation skills. The purpose of fire scene simulation, using Computation Fluid Dynamic code, is to provide evidence for fire investigation. By describing the configuration of fuel, effects of ventilation, designation of the building, the impact of manual or automatic extinguishments and fire source help the reproduction of fire scene by simulation code. Simulation could reconstruct fire process and explain the development of fire and smoke. Comparing simulation results with actual events, we can get clear evidence toward the fire and smoke development. However there seems to be very limited local study that indicates whether the material data provided by NIST may use in Taiwan fire scene reconstruction for a better prediction. Obviously some form of validation is needed. To solve the doubts and enhance the investigation reliability, this research will concentrate on the effects of testing interior materials, floor materials to improve fire scene investigation and building fire safety. It is envisaged that it will provide comparisons for the ongoing validation of the FDS (Fire Dynamics Simulator) model of fire scenarios design. All the results of combustion experiments such as burning time, temperature, and weight loss variation of samples show that the scenario C (fire source at the corner) is the worst fire. It also confirms the worst fire scenario in the performance-based design of fire safety. The burning participating in accelerating agent with absorbing floor material is very violent and its harmfulness of fire is more than the burning of the simple petrol. Fireproof carpet will totally lose its efficiency after adding petrol and ignite it. Timber floor material is with lower fire risk compared with the other floor materials. Its harmfulness of fire is relatively low. FDS in the module of HRRPUA (heat release rate of per unit area) can produce the better prediction compared with the real fire. This method can be applied into fire scenario research.