CAJ | 학술논문

利用PyroSim以某公路隧道的设计参数为基础建立FDS+EVAC模型，模拟一定通风速度下的烟气流动和人员疏散情景，并结合公式计算所得的疏散时间对模拟结果进行分析。结果表明：用经修正的量纲一公式计算的临界风速作为模拟通风速度时，烟气产生了一定回流，但不会危及人员安全；当模拟通风速度较小时，烟气产生较严重回流并迅速蔓延至人眼特征高度以下直至地面，危及人员安全；利用量纲一公式及其修正形式计算所得的临界风速与利用Heselden&Kennedy公式及其修正形式的相比，更接近于软件模拟得到的临界风速值。
이용PyroSim이모공로수도적설계삼수위기출건립FDS+EVAC모형，모의일정통풍속도하적연기류동화인원소산정경，병결합공식계산소득적소산시간대모의결과진행분석。결과표명：용경수정적량강일공식계산적림계풍속작위모의통풍속도시，연기산생료일정회류，단불회위급인원안전；당모의통풍속도교소시，연기산생교엄중회류병신속만연지인안특정고도이하직지지면，위급인원안전；이용량강일공식급기수정형식계산소득적림계풍속여이용Heselden&Kennedy공식급기수정형식적상비，경접근우연건모의득도적림계풍속치。
According to the parameters of a certain tunnel, establish FDS+EVAC model by using PyroSim software and simulate smoke flow and personnel evacuation at specified ventilation speed. The simulated results were analyzed by combining with evacuation time calculated by formula. Conclusions are summarized as follows: Smoke reversed slightly in simulation when simulated ventilation speed is set as critical velocity calculated by modified normalization formula and the smoke in areas of reversing would not endanger the people there; Smoke reversed seriously in simulation when simulated ventilation speed is set as a smaller value and the smoke in areas of reversing would endanger the people there; The critical velocity of ventilation calculated by Heselden & Kennedy formula is closer to the critical velocity obtained by simulating than the critical velocity calculated by normalization formula.