CAJ | 학술논문

运用FDS(Fire Dynamic Simulator)软件对采用上送下回式空调系统的洁净室火灾烟气运动进行了数值模拟.通过对速度场及温度场的分析,研究了上送下回式气流组织模式对烟气运动和早期火灾烟气探测的影响.模拟研究结果表明,天花板附近的温度场和浓度场均受到较大影响,与没有洁净空调作用情况下相比,火灾探测响应时间将延迟数十秒.
운용FDS(Fire Dynamic Simulator)연건대채용상송하회식공조계통적길정실화재연기운동진행료수치모의.통과대속도장급온도장적분석,연구료상송하회식기류조직모식대연기운동화조기화재연기탐측적영향.모의연구결과표명,천화판부근적온도장화농도장균수도교대영향,여몰유길정공조작용정황하상비,화재탐측향응시간장연지수십초.
Smoke movement is numerically simulated using FDS (Fire Dynamic Simulator) developed by NIST in a clean room with an upper-supply and bottom-exhaust air-conditioning system. The velocity field and temperature distribution in the early stage of a fire is analyzed. The effect of the air flow pattern on smoke movement as well as the effect on early stage fire detection are discussed. The temperature and concentrations near the ceiling are affected significantly and the detector activation time will be delayed for dozens of seconds compared with that of the room without air-conditioning systems.