水的粘度计算表

1、水的黏度表（040 C ）温度T粘度卩Pa s或N s m-2温度T粘度卩Pa s或KcKN sm-21.7921X1.0000X0273.161.792110-320.2293.361.000010-31.7313X0.9810X1274.161.731310-321294.160.981010-31.6728X0.9579X2275.161.672810-322295.160.957910-31.6191X0.9358X3276.161.619110-323296.160.935810-31.5674X0.9142X4277.161.567410-324297.160.914210-31.

2、5188X0.8937X5278.161.518810-325298.160.893710-31.4728X0.8737X6279.161.472810-326299.160.873710-37280.161.42841.4284 X10-327300.160.85450.8545 X10-38281.161.38601.3860 X10-328301.160.83600.8360 X10-39282.161.34621.3462 X10-329302.160.81800.8180 X10-310283.161.30771.3077 X10-330303.160.80070.8007 X10-

3、311284.161.27131.2713 X10-331304.160.78400.7840 X10-312285.161.23631.2363 X10-332305.160.76790.7679 X10-313286.161.20281.2028 X10-333306.160.75230.7523 X10-314287.161.17091.1709 X10-334307.160.73710.7371 X10-315288.161.14041.1404 X10-335308.160.72250.7225 X10-316289.161.11111.1111 X36309.160.70850.7

4、085 X10-310-317290.161.08281.0828 X10-337310.160.69470.6947 X10-318291.161.05591.0559 X10-338311.160.68140.6814 X10-319292.161.02991.0299 X10-339312.160.66850.6685 X10-320293.161.00501.0050 X10-340313.160.65600.6560 X10-3水的物理性质温度t/°c饱和蒸气压 p/kPa密度P/kg m-3焓H/kJ kg-1比定压热容 Cp/kJ kg-1 K-1导热系数入/10-2W

5、 m-1 K-1粘度卩/10-5Pa s体积膨胀系数a/10-4K-1表面张力c/10-3N m-1普兰德数Pr00.6082999.904.21255.13179.210.6375.613.66101.2262999.742.044.19757.45130.770.7074.19.52202.3346998.283.904.18359.89100.501.8272.67.01304.2474995.7125.694.17461.7680.073.2171.25.42407.3766992.2165.714.17463.3865.603.8769.64.325012.31988.1209.30

6、4.17464.7854.944.4967.73.546019.932983.2251.124.17865.9446.885.1166.22.987031.164977.8292.994.17866.7640.615.7064.32.548047.379971.8334.944.19567.4535.656.3262.62.229070.136965.3376.984.20867.9831.656.9560.71.96100101.33958.4419.104.22068.0428.387.5258.81.76110143.31951.0461.344.23868.2725.898.0856.

7、91.61120198.64943.1503.674.25068.5023.738.6454.81.47130270.25934.8546.384.26668.5021.779.1752.81.36140361.47926.1589.084.28768.2720.109.7250.71.26150476.24917.0632.204.31268.3818.6310.348.61.18160618.28907.4675.334.34668.2717.3610.746.61.11170792.59897.3719.294.37967.9216.2811.345.31.051801003.5886.

8、9763.254.41767.4515.3011.942.31.001901255.6876.0807.634.46066.9914.4212.640.80.962001554.77863.0852.434.50566.2913.6313.338.40.932101917.72852.8897.654.55565.4813.0414.136.10.912202320.88840.3943.704.61464.5512.4614.833.80.892302798.59827.3990.184.68163.7311.9715.931.60.882403347.91813.61037.494.756

9、62.8011.4716.829.10.872503977.67799.01085.644.84461.7610.9818.126.70.862604693.75784.01135.044.94960.8410.5919.724.20.872705503.99767.91185.285.07059.9610.2021.621.90.882806417.24750.71236.285.22957.459.8123.719.50.892907443.29732.31289.955.48555.829.4226.217.20.933008592.94712.51344.805.73653.969.1

10、229.214.70.973109877.96691.11402.166.07152.348.8332.912.31.0232011300.3667.11462.036.57350.598.5338.210.01.1133012879.6640.21526.197.24348.738.1443.37.821.2234014615.9610.11594.758.16445.717.7553.45.781.3835016538.5574.41671.379.50443.037.2666.83.891.6036018667.1528.01761.3913.98439.546.671092.062.3

11、637021040.9450.51892.4340.31933.735.692640.486.80F3Viscosity decreases with pressure(at temperatures below 33 °C)Viscous flow occurs by molecules movi ng through the voids that exist betwee nthem. As the pressure in creases, the volume decreases and the volume ofthese voids reduces, so no rmall

12、y in creas ing pressure in creases the viscosity.S EdE waoa(A>oEnc>Q400 +：600 >8001000?Preiitrre, MPa 厂亠*Water's pressure-viscosity behavior 534 can be explained by the increased pressure (up to about 150 MPa) causing deformation, so reducing the strength of the hydrogen-bonded network,

13、 which is also partially responsible for the viscosity. This reduction in cohesivity more than compensates for the reduced void volume. It is thus a direct consequence of the balance between hydrogen bonding effects and the van der Waals dispersion forces 558 in water; hydrogen bonding prevailing at

14、 lower temperatures and pressures. At higher pressures (and densities), the balance between hydrogen bonding effects and the van der Waals dispersion forces is tipped in favor of the dispersion forces and the remaining hydrogen bonds are stronger due to the closer proximity of the contributing oxyge

15、n atoms 655. Viscosity, then, increases with pressure. The dashed line (opposite) indicates the viscosity minima.lOOC100 200.Pressure, MPaThe variati on of viscosity with pressure and temperature has bee n used as evide nee that the viscosity is determ ined more by the exte nt of hydroge n bonding rather tha n hydrog