中文摘要：

针对地下车库诱导通风辅助排烟技术问题,利用数值模拟手段并结合现场实测结果对地下车库不同风机布置形式、风机出口风速火灾工况排烟效果进行研究,分析射流风速、风机的位置对车库内烟气温度分布和能见度的影响.研究结果表明,射流风机的风速大小和布置形式对排烟效果有重要影响,在工况3和工况5中,烟气能够向排烟口快速移动,并大幅度提髙火源上游位置的能见度,降低火源附近区域的温度.工况3可作为该地下车库最佳辅助排烟方案.

英文摘要：

In order to solve technical problems of the smoke control system assisted by jet ventilation in underground garage,a numerical simulation method was used to study influences of fans arrange-ment and wind speed at fan outlet on smoke control. In add it ion,on-site test results of a fire scenar-io in an underground garage were used to validate the mathematical model in numerical study. The influence of the position of jet fans and wind velocity on temperature distribution and visibility was analyzed. Results show that the wind velocity and layout of jet fans have significant effect on smoke exhaust. In Case 3 and case 5 ,smoke would be exhausted to smoke vent q u ick ly ,visibility at up-stream is improved substantially, and temperature near fire source de creases. Consequently, the best auxiliary solution to smoke extraction is case 3.