CAJ | 학술논문

用不同排烟系统对火灾情况下地下商业街进行了数值研究.研究考察了由不同出入口组合组成的三个火灾场景.本文用CFD对地下商业街的烟气情况进行了场模拟.所用技术是雷诺Navier-Stokes公式,具体标准K-E模型.不同排烟系统用预测烟气流动模式及温度场来加以区分.研究发现,供气口位置对烟气流动模式却是影响很大.更重要的发现是楼梯井起到了不同的作用和影响.不正确的设计可导致更糟的结果.为了设计合适的排烟系统,必须对其性能进行研究.
용불동배연계통대화재정황하지하상업가진행료수치연구.연구고찰료유불동출입구조합조성적삼개화재장경.본문용CFD대지하상업가적연기정황진행료장모의.소용기술시뢰낙Navier-Stokes공식,구체표준K-E모형.불동배연계통용예측연기류동모식급온도장래가이구분.연구발현,공기구위치대연기류동모식각시영향흔대.경중요적발현시루제정기도료불동적작용화영향.불정학적설계가도치경조적결과.위료설계합괄적배연계통,필수대기성능진행연구.
Presents a numerical study of underground shopping mall under a fire with different smoke extraction systems.Three scenarios consist of different combinations of inlets and outlets were examined.A field modeling of smoke phenomena in underground shopping mall is presented by the CFD.The predicated smoke flow pattern and the temperature field are used to distinguish the effects of different smoke extraction systems.It is found that the influence of supply inlets positions do affect the smoke flow pattern strongly.On top of that,it is found that the stairacses play different roles and different functions.Improper design can lead to worse results.Investigation of their performance is therefore required in order to design a proper system.