Numerically investigating fire suppression mechanisms for the water mist with various droplet sizes through FDS code

Ferng, Yuh-Ming; Liu, Cheng‐Hong

doi:10.1016/j.nucengdes.2011.06.002

Cited by 45 publications

(25 citation statements)

References 28 publications

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“…The water droplet heat and mass transfer at humid atmospheric air is taken into account when assessing atmospheric appearance and creating climate models [1]. Water spray application in air conditioning [2], fire suppression [3][4][5][6][7], gas cooling [8,9] and agricultural irrigation systems [10,11] can be considered as traditional. Heat and mass transfer processes are applied for surface treatment [12][13][14] and protection [15][16][17][18], cooling towers [19][20][21]9,22], washing processes [23][24][25], water freezing and crystallization [26][27][28], aerosols [29,30], gas turbines [31][32][33][34][35], heat recovery from humid flue gas [36,37], NO x reduction in fuel combustion [38][39][40], water and fuel emulsions [41][42][43][44], plasma technique [45]<...>…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of the transit phase transformation regime for water droplets that are slipping in humid gas

Miliauskas

Maziukienė

Ramanauskas

2016

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Peculiarities of the transit phase transformation regime for water droplets that are slipping in humid gas

Miliauskas

Maziukienė

Ramanauskas

2016

International Journal of Heat and Mass Transfer

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“…In order to protect people and their property from fire, both experimental and numerical methods have been used in fire science and protection engineering, such as the fire suppression mechanism [3,4], evacuation under fire conditions [5,6], and estimation of fire behavior [7]. As an effective and powerful tool, numerical simulation becomes more and more important for its high repeatability, high accuracy, and low cost of money and time, especially compared with full-scale experiments.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of wood crib fire behavior in a confined space using cone calorimeter data

Zhang

Zhao

et al. 2014

J Therm Anal Calorim

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The simulation of wood crib fire behavior in a confined space with fire dynamics simulator (FDS) was presented in this paper, including the heat release rate, flame temperature, central temperature of crib, and oxygen concentration. In the simulation, the cone calorimeter data, such as ignition temperature and heat release rate of wood material measured from cone calorimeter test, were inputted into FDS. Simulations were compared with the results of practical wood crib burning experiments. The simulation results shown that the inputted heat release rate data from cone calorimeter tests obtained with different external heat flux (35-50 kW m -2 ) had little influence on the simulation results. The heat release rates were in good agreement with the experimental measurement with the biggest difference of 13.9 % in peak value. FDS underestimated the flame temperatures at lower positions about 10 % during the steady state, and the difference between simulation and experiment in flame temperature decreased as the height of measurement position increased. Although there was a big difference in decay phrase, the temperatures in the middle of wood crib were successfully simulated for the overlapped curves during (I) Fast growth stage and (II) Moderate growth stage of burning. The oxygen concentrations were overestimated because the oxygen concentrations measured at the height of 1.8 m in the space were higher than the experimental data with an average difference of 15.5 %. On the whole, an effective way was provided with reasonable results to study the burning characteristics of wood crib fire with numerical simulation.

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“…스프링클러는 화원 바로 윗부분에 설치되었고 개구부 쪽 으로 2.4 m의 간격을 두고 2개가 설치되었다. 스프링클러 의 작동 조건은 72 o C로 가정했고 스프링클러에서 분사되 는 액적크기는 Ferng (5) 등의 연구를 참조하여 100 μm부터 1000 μm까지 100 μm씩 증가시켜 해석을 진행하고 스프링 클러의 유무에 따라 화재풍속을 비교분석했다. 분무유량은 Figure 1.…”

Section: 서 론unclassified

Numerical Study of the Factors Affecting Fire Flow Velocity in the Case of Interior Fire in an Apartment Building

Kim¹,

Seo²,

Shin³

2016

Fire Science and Engineering

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When an interior fire occurs in an apartment building, pollution of the entrance area by fire smoke before an air fan operates makes the evacuation of people very difficult aswhen the fire doors are opened. Numerical simulations using Fire Dynamics Simulator were conducted to determine the impact of a sprinkler on the fire flow velocity. The fire flow velocity was compared depending on the presence of sprinklers and the sprayed droplet size. The configuration and actual dimensions of an apartment building were used in the numerical simulations. The simulation results showed that fire flow velocity becomes smaller when a sprinkler is installed. In addition, the smaller droplet size results in a smaller fire flow velocity because smaller droplets can be evaporated more easily.

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Numerically investigating fire suppression mechanisms for the water mist with various droplet sizes through FDS code

Cited by 45 publications

References 28 publications

Peculiarities of the transit phase transformation regime for water droplets that are slipping in humid gas

Peculiarities of the transit phase transformation regime for water droplets that are slipping in humid gas

Numerical simulation of wood crib fire behavior in a confined space using cone calorimeter data

Numerical Study of the Factors Affecting Fire Flow Velocity in the Case of Interior Fire in an Apartment Building

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