直管摩擦系数λ与雷诺数Re的测定.doc

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1、直管摩擦系数λ与雷诺数Re的测定液体温度28℃液体密度ρ=995.78Kg/m液体粘度μ=0.85mPa.Sd=0.008mL=1.708m序号流量（mˆ3/h直管压差△p△P(Pa）流速（m/s）Re∑hfλ（kPa）10.98111.65.41850734.409112.0730.193820.96109.95.30849699.013110.3660.194830.8799.3993004.81045039.73199.7210.194240.8598.9989004.70044004.33599.3190.198050.8393.9939004

2、.58942968.93994.2980.192560.7590900004.14738827.35490.3810.204270.783.7837003.87036238.86484.0550.203480.6679.2792003.64934168.07279.5360.204290.6578.6786003.59433650.37478.9330.2057100.5875.9759003.20730026.48776.2220.2227110.4871.6716002.65424849.50771.9030.2538120.3567.867800

3、1.93518119.43268.0870.3296