改后 粗糙管摩擦系数λ与雷诺数Re的测定 2

1、表1流体在光滑管摩擦系数入与雷诺数Re的测定（在25C时，p水=997.02kg/m3, p水=0.000895Pas）序号R正 U/mh倒 U/m流速u/ (m3/s )直管损 失Hf1/m流量 qv/(m3 /h)雷诺数Re压差A P/Pa直管摩 擦系数入标准阻力系数入，绝对误 差相对误差/%10.47800.44902.4300.4492.74754144.3524391.5640.01990.02070.00083.9920.19040.19781.5340.1981.73434172.1801934.6360.02200.02320.00125.3630.07620.08860.97

2、00.0891.09721618.059866.5760.02460.02610.00145.5340.02940.04120.6030.0410.68113428.048402.9680.02970.02940.00031.0850.01300.01820.4010.0180.4538929.166178.0100.02960.03250.00298.8160.00500.00900.2490.0090.2815537.63488.0270.03810.03660.00154.04表2流体在粗糙管摩擦系数入与雷诺数Re的测定（在25笆时，p /997.2kg/m3, 口水=.895Pas）序

3、号正U型管压差计（流量）水水倒U型管压差计（压强降）液体高度 差 R/m流量 qv/(m 3/h)流速 u/(m/s)液体高度 差h/m压差 P/Pa雷诺数Re摩擦系数入10.47802.7472.4300.88508655.97854144.3520.039220.19041.7341.5340.35763497.60234172.1800.039830.07621.0970.9700.14821449.51021618.0590.041240.02940.6810.6030.0610596.62713428.0480.043950.01300.4530.4010.0276269.94989

4、29.1660.045060.00500.2810.2490.0138134.9755537.6340.0584表3突然扩大管局部阻力系数&的测定（在25C时，p水=99702kg/m3, p水=0.0008952$）序号正U型管压差计（流量）倒U型管压差计（压强降）液体高度差 R/m流量qv /(m3/h)流速u /(m/s)液体高 度差 h/m压差 P/Pa阻力系 数g平均阻力系数g标准偏差6 （ ）10.47802.7472.4300.16841647.0810.5590.6450.21320.38502.4652.1810.13521322.3600.55830.28682.1281.

5、8820.1010987.8570.55940.19601.7591.5560.0682667.0480.55350.10041.2591.1140.0356348.1950.56360.00500.2810.2490.003433.2551.080光滑管误差分析表序 号Er(AR正)UEr(Ah倒)Er(d)Er(d0)ErEr(A)Er(R正)2/UEr(A)2Er(Ah倒刀2Er(d)2/Er(A)2Er(d 0)2 /Er( A )2Er(l)2/Er(A )210.00150.00160.0250.04170.0330.210.01%0.01%1.44%4.00%0.03%20.00

6、370.00360.210.03%0.03%1.44%4.00%0.03%30.00930.00800.210.20%0.15%1.43%3.99%0.03%40.02410.01720.211.30%0.66%1.41%3.92%0.03%50.05440.03890.226.17%3.15%1.30%3.63%0.02%60.14140.07860.2628.72 %8.87%0.90%2.50%0.02%粗糙管误差分析表序 号Er(AR正.)Er(AhEr(d)Er(d0)ErEr(A )Er(AR 正 u)2 /Er( A )2Er(A h 倒 u)2 /Er( A )2Er(d)2/Er(A )2Er(d0 )2 /Er( A )2Er(l)2/Er(A )210.00150.00080.0250.04170.00330.210.01%0.00%1.44%4.00%0.03%20.00180.00200.210.01%0.01%1.44%4.00%0.03%30.00250.00480.210.01%0.05%1.44%4.00%0.03%40.00360.01160.210.03%0.31%1.43%3.99%0.02%50.00700.02560.210.11%1.49%1.42%3.94%0.02%60.14140.051