水的粘度计算表

水的黏度表 (040)精品资料温度 tpa s 或粘度温度 t粘度pas 或knsm-2knsm-20273.161.79211.7921 10 -320.2293.361.00001.0000 10 -31274.161.73131.7313 10 -321294.160.98100.9810 10 -32275.161.67281.6728 10 -322295.160.95790.9579 10 -33276.161.61911.6191 10 -323296.160.93580.9358 10 -34277.161.56741.5674 10 -324297.160.91420.9142 10 -35278.161.51881.5188 10 -325298.160.89370.8937 10 -36279.161.47281.4728 10 -326299.160.87370.8737 10 -37280.161.42841.4284 10 -327300.160.85450.8545 10 -38281.161.38601.3860 10 -328301.160.83600.8360 10 -39282.161.34621.3462 10 -329302.160.81800.8180 10 -310283.161.30771.3077 10 -330303.160.80070.8007 10 -311284.161.27131.2713 10 -331304.160.78400.7840 10 -312285.161.23631.2363 10 -332305.160.76790.7679 10 -313286.161.20281.2028 10 -333306.160.75230.7523 10 -314287.161.17091.1709 10 -334307.160.73710.7371 10 -310 -310 -316289.161.11111.111136309.160.70850.7085 15288.161.14041.1404 35308.160.72250.7225 10 -310 -317290.161.08281.0828 10 -337310.160.69470.6947 10 -318291.161.05591.0559 10 -338311.160.68140.6814 10 -319292.161.02991.0299 10 -339312.160.66850.6685 10 -320293.161.00501.0050 10 -340313.160.65600.6560 10 -3水的物理性质温度t/饱和蒸气压 p/kpa密度/kg m-3焓h/kj kg-1比定压热容 cp /kjkg -1k -1导热系数/10 -2 wm-1 k-1粘度/10 -5 pa s体积膨胀系数/10 -4k -1表面张力/10 -3 nm-1普兰德数 pr00.6082999.904.21255.13179.210.6375.613.66101.2262999.742.044.19757.45130.770.7074.19.52202.3346998.283.904.18359.89100.501.8272.67.01304.2474995.7125.694.17461.7680.073.2171.25.42407.3766992.2165.714.17463.3865.603.8769.64.325012.31988.1209.304.17464.7854.944.4967.73.546019.932983.2251.124.17865.9446.885.1166.22.987031.164977.8292.994.17866.7640.615.7064.32.548047.379971.8334.944.19567.4535.656.3262.62.229070.136965.3376.984.20867.9831.656.9560.71.96100101.33958.4419.104.22068.0428.387.5258.81.76110143.31951.0461.344.23868.2725.898.0856.91.61120198.64943.1503.674.25068.5023.738.6454.81.47130270.25934.8546.384.26668.5021.779.1752.81.36140361.47926.1589.084.28768.2720.109.7250.71.26150476.24917.0632.204.31268.3818.6310.348.61.18160618.28907.4675.334.34668.2717.3610.746.61.11170792.59897.3719.294.37967.9216.2811.345.31.051801003.5886.9763.254.41767.4515.3011.942.31.001901255.6876.0807.634.46066.9914.4212.640.80.962001554.77863.0852.434.50566.2913.6313.338.40.932101917.72852.8897.654.55565.4813.0414.136.10.912202320.88840.3943.704.61464.5512.4614.833.80.892302798.59827.3990.184.68163.7311.9715.931.60.882403347.91813.61037.494.75662.8011.4716.829.10.872503977.67799.01085.644.84461.7610.9818.126.70.862604693.75784.01135.044.94960.8410.5919.724.20.872705503.99767.91185.285.07059.9610.2021.621.90.882806417.24750.71236.285.22957.459.8123.719.50.892907443.29732.31289.955.48555.829.4226.217.20.933008592.94712.51344.805.73653.969.1229.214.70.973109877.96691.11402.166.07152.348.8332.912.31.0232011300.3667.11462.036.57350.598.5338.210.01.1133012879.6640.21526.197.24348.738.1443.37.821.2234014615.9610.11594.758.16445.717.7553.45.781.3835016538.5574.41671.379.50443.037.2666.83.891.6036018667.1528.01761.3913.98439.546.671092.062.3637021040.9450.51892.4340.31933.735.692640.486.80f3viscosity decreases with pressure(at temperatures below 33c)viscous flow occurs by molecules moving through the voids that exist between them. as the pressure increases, the volume decreases and the volume of these voids reduces, so normally increasing pressure increases the viscosity.waters 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, 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 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 oxygen atoms 655. viscosity, then, increases with pressure. the dashed line (opposite) indicates the viscosity minima.the variation of viscosity with pressure and temperature has been used as evidence that the viscosity is determined more by the extent of hydrogen bonding rather than hy