如下表 计算过程 断面 h/m A/m2 v/(m/s) bar{v}/(m/s) frac{alpha v^{2}}{2g}/m
如下表
计算过程 | ||||||||
断面 | h/m | A/m2 | v/(m/s) | bar{v}/(m/s) | frac{alpha v^{2}}{2g}/m | χ/m | R/m | bar{R}/m |
6 | 4 | 72 | 0.658 | 0.022 | 26.422 | 2.725 | ||
0.682 | 2.671 | |||||||
5 | 3.8 | 67.26 | 0.705 | 0.025 | 25.701 | 2.617 | ||
0.73 | 2.563 | |||||||
4 | 3.6 | 62.64 | 0.755 | 0.029 | 24.98 | 2.508 | ||
0.785 | 2.453 | |||||||
3 | 3.4 | 58.14 | 0.815 | 0.034 | 24.25 | 2.398 | ||
0.835 | 2.364 | |||||||
2 | 3.28 | 55.50 | 0.854 | 0.037 | 23.83 | 2.329 | ||
0.858 | 2.324 | |||||||
1 | 3.26 | 55.06 | 0.861 | 0.038 | 23.75 | 2.318 |
断面 | C/(m1/2/s) | bar{C}/(m^{1/2}/s) | bar{J}=frac{bar{v^{2}}}{bar{C^{2}}bar{R}} | Delta l=frac{Delta e}{(i-bar{J})}/m | l=∑Δl/m |
6 | 47.29 | ||||
47.13 | 7.84×10-5 | 1620.07 | 1620.07 | ||
5 | 46.97 | ||||
46.8 | 9.49×10-5 | 1864.89 | 3484.96 | ||
4 | 46.64 | ||||
46.47 | 11.63×10-5 | 2329.75 | 5814.71 | ||
3 | 46.29 | ||||
46.18 | 13.83×10-5 | 1896.27 | 7710.98 | ||
2 | 46.07 | ||||
46.05 | 14.9×10-5 | 333.33 | 8044.31 | ||
1 | 46.03 | 相对误差:left| frac{804431-8000}{8000} right|=5% |