Laser & Optoelectronics Progress, Volume. 56, Issue 14, 141201(2019)
Correction of Fire Location Error of Tunnel Fire Under Longitudinal Wind
Figures & Tables(7)
Fig. 3. Diagram of tunnel sensor distribution and ignition positions in full-scale simulation test
Fig. 4. Temperature versus time of sensor under natural wind at No. 1 ignition position
Fig. 5. Temperature field changes under different wind speeds at No. 1 ignition position. (a) Natural wind; (b) longitudinal wind speed of 1.5 m/s; (c) longitudinal wind speed of 3 m/s; (d) longitudinal wind speed of 4.5 m/s
Table 1. Ignition test conditions and alarm response information table
View tableTable 1. Ignition test conditions and alarm response information table
Serial number Ignition position Wind speed / (m·s-1) Response time /s Alarm sensor Serial number Ignition position Wind speed / (m·s-1) Response time /s Alarm sensor 1 1st Natural wind 16 S6 12 3rd 3 24 S6 2 1st Natural wind 11 S6 13 6th 3 22 S6 3 2nd Natural wind 21 S6 14 5th 3 30 S6 4 3rd Natural wind 16 S6 15 4th 3 45 S6 5 6th Natural wind 22 S5 16 4th 4.5 42 S6 6 6th 1.5 31 S6 17 1st 4.5 45 S7 7 3rd 1.5 20 S7 18 2nd 4.5 46 S8 8 2nd 1.5 11 S7 19 3rd 4.5 37 S8 9 1st 1.5 22 S7 20 5th 4.5 33 S8 10 1st 3 33 S6 21 6th 4.5 51 S6 11 2nd 3 25 S6
Table 2. Correction result table of ignition point estimation algorithm
View tableTable 2. Correction result table of ignition point estimation algorithm
No. Ignition position / m Set wind speed / (m·s-1) Estimated wind speed / (m·s-1) Alarm indication position Estimated fire point /m No. Ignition position / m Set wind speed / (m·s-1) Estimated wind speed / (m·s-1) Alarm indication position Estimated fire point /m 1 25 Natural wind 0.2 S6 25 12 25 3 2.0 S7 26.9 2 25 Natural wind 0.0 S6 25 13 22.5 3 2.3 S6 25 3 25 Natural wind 0.1 S6 25 14 22.5 3 3.3 S5 20 4 25 Natural wind 1.6 S6 25 15 22.5 3 4.6 S6 18.9 5 22.5 Natural wind 1.1 S5 20 16 22.5 4.5 3.0 S6 20.2 6 22.5 1.5 2.3 S6 25 17 25 4.5 3.7 S7 25.1 7 25 1.5 1.8 S7 27.1 18 25 4.5 2.6 S7 30 8 25 1.5 0.8 S6 25 19 25 4.5 1.6 S8 35 9 25 1.5 1.3 S6 25 20 22.5 4.5 3.7 S6 25 10 25 3 2.1 S6 25 21 22.5 4.5 1.4 S6 25 11 25 3 1.3 S6 25
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Dian Fan, Jiao Chen, Jian Wang, Jiajing Liu. Correction of Fire Location Error of Tunnel Fire Under Longitudinal Wind[J]. Laser & Optoelectronics Progress, 2019, 56(14): 141201
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Dec. 25, 2018
Accepted: Feb. 20, 2019
Published Online: Jul. 12, 2019
The Author Email: Wang Jian (fandian@whut.edu.cn)
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