1.流体流动阻力测定实验报告

实验原始数据记录管长 L=1m;温度=15℃ 实验序号 1 2 3 4 5 6 7 8 9 10 11 流量 m /h 0.338 0.450 0.609 0.861 1.234 1.514 2.124 2.583 3.013 3.299 3.6503

光滑管压差粗糙管压差光滑管管径光滑管流速粗糙管管径粗糙管流速 Kpa Kpa m m/s m m/s 0.170 2.790 0.02000 0.29886 0.02000 0.29886 0.340 3.220 0.02000 0.39789 0.02000 0.39789 0.550 3.900 0.02000 0.53847 0.02000 0.53847 1.110 5.400 0.02000 0.76129 0.02000 0.76129 2.140 8.210 0.02000 1.09110 0.02000 1.09110 3.090 10.850 0.02000 1.33867 0.02000 1.33867 3.880 18.450 0.02000 1.87803 0.02000 1.87803 6.360 25.800 0.02000 2.28387 0.02000 2.28387 9.250 33.950 0.02000 2.66408 0.02000 2.66408 11.360 40.120 0.02000 2.91696 0.02000 2.91696 14.410 48.360 0.02000 3.22731 0.02000 3.22731 计算结果 光滑管Re 光滑管λ 5235.77 0.076214 6970.70 0.085995 9433.69 0.075954 13337.28 0.076690 19115.22 0.071979 23452.55 0.069044 32901.73 0.044050 40011.84 0.048824 46672.74 0.052187 51103.01 0.053461 56540.16 0.055399

密度 kg/m 998.95 998.95 998.95 998.95 998.95 998.95 998.95 998.95 998.95 998.95 998.953

绝对粘度 Pa·s 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114 0.00114

实验次数 1 2 3 4 5 6 7 8 9 10 11

流量 0.338 0.450 0.609 0.861 1.234 1.514 2.124 2.583 3.013 3.299 3.650

粗糙管Re 粗糙管λ 5235.77 1.250811 6970.70 0.814426 9433.69 0.538581 13337.28 0.373086 19115.22 0.276143 23452.55 0.242437 32901.73 0.209463 40011.84 0.198058 46672.74 0.191541 51103.01 0.188807 56540.16 0.185918

Ln(Re)光滑 8.56327 8.849472 9.152042 9.498319 9.85824 10.06273 10.40128 10.59693 10.75092 10.8416 10.94271

画图数据 Lnλ光滑 Ln(Re)粗糙 Lnλ粗糙 -2.57421 8.56327 0.223792 -2.45346 8.849472 -0.20527 -2.57763 9.152042 -0.61882 -2.56799 9.498319 -0.98595 -2.63138 9.85824 -1.28684 -2.67301 10.06273 -1.41701 -3.12244 10.40128 -1.56321 -3.01954 10.59693 -1.6192 -2.95292 10.75092 -1.65265 -2.92881 10.8416 -1.66703 -2.8932 10.94271 -1.68245

2

2

1

1

0

0

-1

-1

Lnλ光滑 Lnλ粗糙

-2

-2

-3

-3

-4

-4

-5

-5

55.2.4.6.866.2.4.6.877.2.4.6.888.2.4.6.899.2.4.6.8 10.210.6 11 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 10 10.410.8

1.400000 1.300000 1.200000 1.100000 1.000000 0.900000 0.800000 0.700000 0.600000 0.500000 0.400000 0.300000

光滑管 粗糙管

0.300000 0.200000 0.100000 0.000000 0 10000 20000 30000 40000 50000 60000