流体管路流动阻力系数
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流量L/h
粗糙管/cmH2O 粗糙管/cmH2O 平均压差△P
f
cmH2O 左右压差左右压差
500 54.2 55.9 1.7 54.3 55.9 1.6 1.65 700 57.5 60.7 3.2 57.7 60.9 3.2 3.2 900 61.7 67.2 5.5 61.5 66.8 5.3 5.4 1100 65 72.8 7.8 65 72.5 7.5 7.65 1300 68 78.4 10.4 68.1 78.6 10.5 10.45 1500 70.6 84.8 14.2 70.6 84.9 14.3 14.25 1700 72.4 90.7 18.3 72.3 90.5 18.2 18.25 1900 73.4 95.8 22.4 73.3 96.7 23.4 22.9
流量L/h
光滑管/cmH2O 光滑管/cmH2O 平均压差△P
f
cmH2O 左右压差左右压差
500 50.3 51.1 0.8 50.2 51.4 1.2 1 700 54.3 56.5 2.2 54.3 56.5 2.2 2.2 900 59 62.5 3.5 58.6 62.1 3.5 3.5 1100 63.3 68.4 5.1 62.9 67.8 4.9 5 1300 67.4 74 6.6 67.2 73.9 6.7 6.65 1500 71.3 80.4 9.1 70.9 76.9 6 7.55 1700 73.8 84.9 11.1 73.7 84.7 11 11.05 1900 76.2 89.5 13.3 76.2 89.5 13.3 13.3
流量L/h
局部阻力管/cmH2O 局部阻力管/cmH2O 平均压差△P
f
cmH2O 左右压差左右压差
500 49.9 51.5 1.6 49.8 51.3 1.5 1.55 700 54.2 56.9 2.7 54.2 57 2.8 2.75 900 58.5 62.8 4.3 58.5 62.5 4 4.15 1100 63.2 69.1 5.9 62.7 68.4 5.7 5.8 1300 66.5 74.2 7.7 66.7 74.4 7.7 7.7 1500 70.2 80.3 10.1 69.9 79.9 10 10.05 1700 72.8 85.6 12.8 72.7 85.4 12.7 12.75 1900 75 90.2 15.2 75 90.2 15.2 15.2
粗糙管:
流量(L/h) 平均压差
(mH2O) 平均压差
Pa 流速v(m3/s)Re
500 0.0165 161.8453533 0.4423213 8786.569629 700 0.032 313.8818974 0.6192498 12301.19748 900 0.054 529.6757018 0.7961783 15815.82533 1100 0.0765 750.3739109 0.9731069 19330.45318 1300 0.1045 1025.020571 1.1500354 22845.08104 1500 0.1425 1397.755324 1.3269639 26359.70889 1700 0.1825 1790.107696 1.5038924 29874.33674 1900 0.229 2246.217328 1.6808209 33388.96459
λλ(柏拉修斯公
式)
△λ
0.033148734 0.032679969 0.000468765
0.032800232 0.030043438 0.002756794
0.03348357 0.028213925 0.005269645
0.031754047 0.026833416 0.004920631
0.031056506 0.025735837 0.005320669
0.031809391 0.024831407 0.006977984
0.031716703 0.024066443 0.007650260
0.031860405 0.02340646 0.008453945
粗糙管的相对粗糙度ε约为0.0006,绝对粗糙度ε/d为0.03
流量L/h 平均压差
mH2O 平均压差
Pa 流速v(m3/s)Re
500 0.01 98.08809293 0.4423213 8786.569629
700 0.022 215.7938045 0.6192498 12301.19748
900 0.035 343.3083253 0.7961783 15815.82533 1100 0.05 490.4404647 0.9731069 19330.45318 1300 0.0665 652.285818 1.1500354 22845.08104 1500 0.0755 740.5651016 1.3269639 26359.70889 1700 0.1105 1083.873427 1.5038924 29874.33674 1900 0.133 1304.571636 1.6808209 33388.96459
λλ(柏拉修斯公式)△λ
0.020090142 0.032679969 -0.012589827
0.022550159 0.030043438 -0.007493279
0.021702314 0.028213925 -0.006511611
0.020754279 0.026833416 -0.006079137
0.019763231 0.025735837 -0.005972606
0.016853397 0.024831407 -0.007978010
0.019203812 0.024066443 -0.004862631
0.018504078 0.02340646 -0.004902382
光滑管的相对粗糙度ε约为0.0005,绝对粗糙度ε/d为0.025