水的粘度计算表

温度T 粘度μ ℃ K Pa·s或N·s·m-2 1.7921×10-3 1.7313×10-3 1.6728×10-3 温度 T ℃ K 粘度μ Pa·s或 N·s·m-2 1.0000×10-3 0.9810×10-3 0.9579×10-3 0.9358×10-3 0.9142×10-3 0.37×10-3 0.8737×10-3 0 273.16 1.7921 20.2 293.36 1.0000 1 274.16 1.7313 21 294.16 0.9810 2 275.16 1.6728 22 295.16 0.9579 3 276.16 1.6191 1.6191×10-3 1.5674×10-3 1.5188×10-3 1.4728×10-3 23 296.16 0.9358 4 277.16 1.5674 24 297.16 0.9142 5 278.16 1.5188 25 298.16 0.37 6 7 279.16 1.4728 26 27 299.16 0.8737 280.16 1.4284 1.4284×300.16 0.85 0.85×10-3 8 281.16 1.3860 1.3860×10-3 1.3462×10-3 1.3077×10-3 1.2713×10-3 1.2363×10-3 1.2028×10-3 1.1709×10-3 1.1404×10-3 1.1111×10-3 28 301.16 0.8360 10-3 0.8360×10-3 0.8180×10-3 0.8007×10-3 0.7840×10-3 0.7679×10-3 0.7523×10-3 0.7371×10-3 0.7225×10-3 0.7085×10-3 9 282.16 1.3462 29 302.16 0.8180 10 283.16 1.3077 30 303.16 0.8007 11 284.16 1.2713 31 304.16 0.7840 12 285.16 1.2363 32 305.16 0.7679 13 286.16 1.2028 33 306.16 0.7523 14 287.16 1.1709 34 307.16 0.7371 15 288.16 1.1404 35 308.16 0.7225 16 2.16 1.1111 36 309.16 0.7085 17 290.16 1.0828 1.0828×10-3 1.0559×10-3 1.0299×10-3 1.0050×10-3 37 310.16 0.6947 0.6947×10-3 0.6814×10-3 0.6685×10-3 0.6560×10-3 18 291.16 1.0559 38 311.16 0.6814 19 292.16 1.0299 39 312.16 0.6685 20 293.16 1.0050 40 313.16 0.6560 水的物理性质

温度饱和蒸气t/℃ 压 p/kPa 比定压热容cp/kJ·kg-1·K-1 体积膨导热系数λ/10-2W·m-1·K-1 表面张密度ρ/kg·m-3 焓 H/kJ·kg-1 粘度μ/10-5Pa·s 普兰德数Pr 胀系数α力σ/10-4K-1 /10-3N·m-1 0 10 20 30 40 50 0.6082 1.2262 2.3346 4.2474 7.3766 12.31 999.9 0 999.7 42.04 998.2 83.90 4.212 4.197 4.183 55.13 57.45 59. 61.76 63.38 .78 179.21 0.63 130.77 0.70 100.50 1.82 80.07 65.60 .94 3.21 3.87 4.49 75.6 74.1 72.6 71.2 69.6 67.7 13.66 9.52 7.01 5.42 4.32 3. 995.7 125.69 4.174 992.2 165.71 4.174 988.1 209.30 4.174 60 70 80 90 19.932 31.1 47.379 70.136 983.2 251.12 4.178 977.8 292.99 4.178 971.8 334.94 4.195 965.3 376.98 4.208 958.4 419.10 4.220 951.0 461.34 4.238 943.1 503.67 4.250 934.8 6.38 4.266 926.1 5.08 4.287 917.0 632.20 4.312 907.4 675.33 4.346 7.3 719.29 4.379 886.9 763.25 4.417 876.0 807.63 4.460 863.0 852.43 4.505 852.8 7.65 4.555 840.3 943.70 4.614 65.94 66.76 67.45 67.98 68.04 68.27 68.50 68.50 68.27 68.38 68.27 67.92 67.45 66.99 66.29 65.48 .55 46.88 40.61 35.65 31.65 28.38 25. 23.73 21.77 20.10 18.63 17.36 16.28 15.30 14.42 13.63 13.04 12.46 5.11 5.70 6.32 6.95 7.52 8.08 8. 9.17 9.72 10.3 10.7 11.3 11.9 12.6 13.3 14.1 14.8 66.2 .3 62.6 60.7 58.8 56.9 .8 52.8 50.7 48.6 46.6 45.3 42.3 40.8 38.4 36.1 33.8 2.98 2. 2.22 1.96 1.76 1.61 1.47 1.36 1.26 1.18 1.11 1.05 1.00 0.96 0.93 0.91 0. 100 101.33 110 143.31 120 198. 130 270.25 140 361.47 150 476.24 160 618.28 170 792.59 180 1003.5 190 1255.6 200 15.77 210 1917.72 220 2320.88 230 2798.59 240 3347.91 250 3977.67 260 4693.75 270 5503.99 280 17.24 290 7443.29 300 8592.94 310 9877.96 320 11300.3 330 12879.6 340 14615.9 350 16538.5 360 18667.1 370 21040.9 827.3 990.18 4.681 813.6 1037.49 4.756 799.0 1085. 4.844 784.0 1135.04 4.949 767.9 1185.28 5.070 750.7 1236.28 5.229 732.3 12.95 5.485 712.5 1344.80 5.736 691.1 1402.16 6.071 667.1 1462.03 6.573 0.2 1526.19 7.243 610.1 1594.75 8.1 574.4 1671.37 9.504 528.0 1761.39 13.984 450.5 12.43 40.319 63.73 62.80 61.76 60.84 59.96 57.45 55.82 53.96 52.34 50.59 48.73 45.71 43.03 39. 33.73 11.97 11.47 10.98 10.59 10.20 9.81 9.42 9.12 8.83 8.53 8.14 7.75 7.26 6.67 5.69 15.9 16.8 18.1 19.7 21.6 23.7 26.2 29.2 32.9 38.2 43.3 53.4 66.8 109 2 31.6 29.1 26.7 24.2 21.9 19.5 17.2 14.7 12.3 10.0 7.82 5.78 3. 2.06 0.48 0.88 0.87 0.86 0.87 0.88 0. 0.93 0.97 1.02 1.11 1.22 1.38 1.60 2.36 6.80 F3??? Viscosity decreases with pressure

(at temperatures below 33°C)

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.

Water's pressure-viscosity behavior [] 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 between hydrogen bonding effects and the van der Waals dispersion forces [] in water; hydrogen bonding prevailing at lower temperatures and pressures. At higher pressures (and densities), the between hydrogen bonding effects and the van der Waals dispersion forces is tipped in favor of the dispersion forces and the remaining are stronger due to the closer proximity of the contributing oxygen atoms []. 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 hydrogen bonding strength.

Self-diffusion is also affected by pressure where (at low temperatures) both the translational and rotational motion of water anomalously increase as the pressure increases.