Table 2 Standard deviation of flame front velocity and blast pressure.
From: Dimensional study of flexible protection device based on methane explosion protection mechanism
Category name | Flame speed | Overpressure | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
VMax | Drop rate | Upstream \(P_{{Max}}^{ + }\) | Drop rate | Upstream \(P_{{Max}}^{ - }\) | Drop rate | Downstream \(P_{{Max}}^{ + }\) | Drop rate | Downstream \(P_{{Max}}^{ - }\) | Drop rate | |
Units | m/s | kPa | kPa | kPa | kPa | |||||
Case1 | 24.76 ± 0.16 | 18.44% | 19.39 ± 0.55 | 57.86% | 27.48 ± 0.31 | 46.33% | 48.09 ± 0.36 | 40.40% | 56.25 ± 0.35 | 9.03% |
Case2 | 26.05 ± 0.18 | 14.56% | 26.30 ± 0.88 | 41.27% | 36.47 ± 0.35 | 28.60% | 51.48 ± 0.39 | 36.12% | 55.65 ± 0.11 | 10.73% |
Case3 | 28.43 ± 0.23 | 6.41% | 32.25 ± 0.27 | 29.34% | 34.98 ± 0.46 | 31.53% | 60.74 ± 0.40 | 24.62% | 57.34 ± 0.15 | 8.07% |
Case4 | 28.52 ± 0.23 | 6.22% | 37.21 ± 0.35 | 18.57% | 35.94 ± 0.23 | 29.66% | 58.86 ± 0.48 | 26.91% | 59.33 ± 0.29 | 4.65% |
Case5 | 28.99 ± 0.11 | 4.80% | 38.34 ± 0.45 | 16.11% | 34.42 ± 0.37 | 32.69% | 60.73 ± 0.22 | 24.64% | 54.82 ± 0.41 | 11.90% |
Case6 | 31.75 ± 0.13 | -4.38% | 42.76 ± 0.52 | 6.50% | 45.57 ± 0.46 | 10.77% | 61.90 ± 0.52 | 23.18% | 53.35 ± 0.37 | 14.23% |
