流动阻力系数
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1、表二 粗糙直管阻力实验数据表（粗糙直管内径10.0mm，管长1.60m）q /L/hq /m3/su/m/sReAP/Pa入lgRelgA287.77778E-060.099111014000.51083.0418-0.2917401.11111E-050.141515733000.18773.1967-0.7265601.66667E-050.212323591000.027813.3728-1.5558802.22222E-050.283131462000.031293.4977-1.50461203.33333E-050.424647189000.062583.6738-1.203614
2、03.88889E-050.4954550514000.071523.7407-1.14561800.000050.6369707727000.083443.8499-1.07862206.11111E-050.7785865039000.080683.9370-1.09322406.66667E-050.8493943748000.083443.9748-1.07862607.22222E-050.92001022356000.082944.0096-1.08122807.77778E-050.99081100965000.083014.0418-1.08093008.33333E-051.
3、06161179672000.080104.0717-1.09643409.44444E-051.20311336892000.079684.1261-1.09863600.00011.273914155104000.080354.1509-1.09503800.0001055561.344714941116000.080434.1744-1.09464200.0001166671.486216514140000.079464.2179-1.09984600.0001277781.627718087166000.078554.2574-1.10494800.0001333331.6985188
4、73177000.076924.2758-1.11405000.0001388891.769319660192000.076904.2936-1.11415200.0001444441.840120446207000.076654.3106-1.11555600.0001555561.981622019239000.076314.3428-1.11746000.0001666672.123123591272000.075654.3728-1.12126400.0001777782.264725164303000.074074.4008-1.13046800.0001888892.4062267
5、37337000.072974.4271-1.13687400.0002055562.618529096396000.072414.4638-1.14027800.0002166672.760130669435000.071594.4867-1.14528200.0002277782.901632242480000.071484.5084-1.14588800.0002444443.113934601540000.069824.5391-1.15609400.0002611113.326336960622000.070484.5677-1.1519以光滑管第1组数据计算举例:已知水在常温时的物
6、性常数为p =997.04kg/m3 M =8.973x10-45a-s28 x 1000- 3q = 28L - h-1 =3600 = 7.7778 x 10-6m3 - stu =色兀d24 x 7.7778 x10-63.14 x 0.012=0.09908m / sn dup 0.01x 0.09908 x 997.048.973 x 10- 4lg (Re) =3.0418lgA=-0.2917贝 0Re = 1101P空=2x0.008x400= 0.5108Ipu 21.6 x 997.04 x 0.099082表一 光滑管阻力实验数据表（光滑直管内径8.0mm，管长1.60m
7、）q、/L/hP/kpaAP/Pau/m/sRe入IgReIgA18.1-0.55000.10018900.50072.9492-0.300430-0.55000.165914740.18233.1686-0.739351-0.44000.282025070.050463.3991-1.297168-0.33000.376033420.021293.5240-1.671990-0.11000.497644230.0040503.6458-2.39251400.22000.774168810.0033483.8376-2.47521600.55000.884678640.0064083.8956
8、-2.19331800.88000.995288470.0081013.9468-2.09152001.212001.105898300.0098433.9925-2.00692201.515001.2164108130.010174.0339-1.99282401.919001.3270117960.010824.0717-1.96572602.222001.4375127790.010684.1065-1.9715300330001.6587147450.010944.1686-1.96113203.434001.7693157280.010894.1967-1.96283403.9390
9、01.8799167110.011074.2230-1.95593604.545001.9904176940.011394.2478-1.94343804.949002.1010186770.011134.2713-1.95344055.555002.2393199050.011004.2990-1.9586420660002.3222206420.011164.3148-1.95244406.666002.4328216250.011184.3350-1.95144607.171002.5433226080.011014.3543-1.95835008.383002.7645245740.0
10、10894.3905-1.9629520990002.8751255570.010924.4075-1.96185409.797002.9857265400.010914.4239-1.962056010.5105003.0962275230.010994.4397-1.959262012.6126003.4280304720.010754.4839-1.968472016.6166003.9809353870.010514.5488-1.978680020.3203004.4232393190.010414.5946-1.9827在同一双对数坐标系中作图如下所示:表三局部阻力实验数据表（粗糙
11、直管内径15.0mm，管长1.20m）T/KP kg*m-3PPa*sqvLh-1阀门状态近端压差kPa、二上山 远端压差kPaApkPaums-1局部压头m阻力系数z301996.2310.0008360600半开11.711.811.60.943620.001190.02615301996.2310.0008360600全开3.53.53.50.943620.000360.00789301996.2310.0008360800半开1818.117.91.258160.001830.02270301996.2310.0008360800全开3.63.73.51.258160.000360.00444
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