水的粘度计算表

1、水的粘度计算表水的黏度表（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-21.7921X1.0000X0273.161.792110-320.2293.361.000010-31.7313X0.9810X1274.161.731310-321294.160.981010-31.6728X0.9579X2275.161.672810-322295.160.957910-31.6191X0.9358X3276.161.619110-323296.160.935810-31.5674X0.9142X4277.161.567410-324297.160.914

2、210-31.5188X0.8937X5278.161.518810-325298.160.893710-31.4728X0.8737X6279.161.472810-326299.160.873710-37280.161.42841.4284 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 X10-330303.160.80070.80

3、07 X10-311284.161.27131.2713 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.

4、70850.7085 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/10-2

5、W 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Pr00.6082999.904.21255.13179.210.6375.613.66101.2262999.742.044.19757.45130.770.7074.19.52202.3346998.283.904.18359.89100.501.8272.67.01304.2474995.7125.694.17461.7680.073.2171.25.42407.3766992.2165.714.17463.3865.603.8769.64.325012.31988.1209.3

6、04.17464.7854.944.4967.73.546019.932983.2251.124.17865.9446.885.1166.22.987031.164977.8292.994.17866.7640.615.7064.32.548047.379971.8334.944.19567.4535.656.3262.62.229070.136965.3376.984.20867.9831.656.9560.71.96100101.33958.4419.104.22068.0428.387.5258.81.76110143.31951.0461.344.23868.2725.898.0856

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、.9763.254.41767.4515.3011.942.31.001901255.6876.0807.634.46066.9914.4212.640.80.962001554.77863.0852.434.50566.2913.6313.338.40.932101917.72852.8897.654.55565.4813.0414.136.10.912202320.88840.3943.704.61464.5512.4614.833.80.892302798.59827.3990.184.68163.7311.9715.931.60.882403347.91813.61037.494.75

9、662.8011.4716.829.10.872503977.67799.01085.644.84461.7610.9818.126.70.862604693.75784.01135.044.94960.8410.5919.724.20.872705503.99767.91185.285.07059.9610.2021.621.90.882806417.24750.71236.285.22957.459.8123.719.50.892907443.29732.31289.955.48555.829.4226.217.20.933008592.94712.51344.805.73653.969.

10、1229.214.70.973109877.96691.11402.166.07152.348.8332.912.31.0232011300.3667.11462.036.57350.598.5338.210.01.1133012879.6640.21526.197.24348.738.1443.37.821.2234014615.9610.11594.758.16445.717.7553.45.781.3835016538.5574.41671.379.50443.037.2666.83.891.6036018667.1528.01761.3913.98439.546.671092.062.

11、3637021040.9450.51892.4340.31933.735.692640.486.80F3Viscosity decreases with pressure(at temperatures below 33 C)Viscous flow occurs by molecules movi ng through the voids that exist betwee n them. As the pressure in creases, the volume decreases and the volume of these25】voids reduces, so no rmally

12、 in creas ing pressure in creases the viscosity.4dI,aD1rt10:=:0tad ：I*n9aS.*50 400600 800 ；i；t 10004WIPa gWaters pressure-viscosity behavior 534 can be expla ined by the in creased pressure (up to about 150 MPa) caus ing deformatio n, so reduci ng the stre ngth of the hydroge n-bon ded n etwork, whi

13、ch is also partially resp on sible for the viscosity. This reduct ion in cohesivity more tha n compe nsates for the reduced void volume. It is thus a direct con seque nee of the bala nee betwee n hydroge n bonding effects andthe van der Waals dispersion forces 558 in water; hydrogen bonding prevaili

14、ng at lower temperatures and pressures. At higher pressures (and den sities), the bala nee betwee n hydroge n bonding effects and the van der Waals dispersi on forces is tipped in favor of the dispersi on forces and the rema ining hydroge n bonds are stron ger due to the closer proximity of the con

15、tributi ng oxyge n atoms 655. Viscosity, the n, in creases with pressure. The dashed line (opposite) in dicates the viscosity mini ma.Al-soo虫 a a/Mlea)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 hyd