Length simulation method for tunnel ventilation

• Main Authors: CHEN SHIQIANG, WU SHIXIAN, CHAI HONGBAO, CHEN YONGPING, ZHANG QIONG, LIU CHUNYU, ZHU HUI, TANG LIANBO, TIAN FENG, ZHU ZHULONG
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a length simulation method for tunnel ventilation. The method comprises the following steps: measuring the radius of an air outlet and the air speed at the air outlet in an initial state; then the adjusting rings are sequentially disassembled from outside to inside, and the radius of the air outlet and the air speed at the air outlet are measured after each adjusting ring is disassembled until all the adjusting rings are disassembled; then the radiuses of the air outlets are sequentially calculated as Ri from large to small, the pressure loss Hf of the tunnel model main body is calculated, and then the equivalent length increment of the tunnel model main body when the radius of the air outlets is Ri is calculated. The experiment table is convenient to operate, experiments of tunnel models with different lengths can be achieved by adjusting the size of the air outlet, and the experiment cost is saved. According to the method, the problem that the length of the tunnel model in a laborato