水的粘度

水的粘度(0～40℃)

温度T ℃ K 粘度μ 厘泊 Pa·s或N·s·m-2 -3温度 T ℃ K 粘度μ 厘泊 Pa·s或N·s·m-2 -30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 273.16 1.7921 1.7921×10 20.2 293.36 1.0000 1.0000×10 274.16 1.7313 1.7313×10 21 275.16 1.6728 1.6728×10 22 276.16 1.6191 1.6191×10 23 277.16 1.5674 1.5674×10 24 278.16 1.5188 1.5188×10 25 279.16 1.4728 1.4728×10 26 -3-3-3-3-3-3294.16 0.9810 0.9810×10 295.16 0.9579 0.9579×10 296.16 0.9358 0.9358×10 297.16 0.9142 0.9142×10 298.16 0.8937 0.8937×10 299.16 0.8737 0.8737×10 300.16 0.8545 0.8545×10 301.16 0.8360 0.8360×10 302.16 0.8180 0.8180×10 303.16 0.8007 0.8007×10 304.16 0.7840 0.7840×10 305.16 0.7679 0.7679×10 306.16 0.7523 0.7523×10 307.16 0.7371 0.7371×10 -3-3-3-3-3-3-3-3-3-3-3-3-3-3280.16 1.4284 1.4284×10 27 281.16 1.3860 1.3860×10 28 282.16 1.3462 1.3462×10 29 283.16 1.3077 1.3077×10 30 284.16 1.2713 1.2713×10 31 285.16 1.2363 1.2363×10 32 286.16 1.2028 1.2028×10 33 287.16 1.1709 1.1709×10 34 -3-3-3-3-3-3-3-315 16 17 18 19 20 288.16 1.1404 1.1404×10 35 289.16 1.1111 1.1111×10 36 290.16 1.0828 1.0828×10 37 291.16 1.0559 1.0559×10 38 292.16 1.0299 1.0299×10 39 293.16 1.0050 1.0050×10 40

-3-3-3-3-3-3308.16 0.7225 0.7225×10 309.16 0.7085 0.7085×10 310.16 0.6947 0.6947×10 311.16 0.6814 0.6814×10 312.16 0.6685 0.6685×10 313.16 0.6560 0.6560×10 -3-3-3-3-3-3水的物理性质

温度t/℃ 饱和蒸气压 p/kPa 密度ρ/kg·m-3 焓 H/kJ·kg-1 比定压热容cp/kJ·kg-1·K-1 导热系数λ/10-2W·m-1·K-1 粘度μ/10-5Pa·s 体积膨胀系数α/10-4K-1 表面张力σ/10-3N·m-1 普兰德数Pr 0 0.6082 999.9 0 999.7 42.04 998.2 83.90 4.212 4.197 4.183 55.13 57.45 59.89 61.76 63.38 64.78 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 64.55 63.73 62.80 179.21 130.77 100.50 80.07 65.60 54.94 46.88 40.61 35.65 31.65 28.38 25.89 23.73 21.77 20.10 18.63 17.36 16.28 15.30 14.42 13.63 13.04 12.46 11.97 11.47 0.63 0.70 1.82 3.21 3.87 4.49 5.11 5.70 6.32 6.95 7.52 8.08 8.64 9.17 9.72 10.3 10.7 11.3 11.9 12.6 13.3 14.1 14.8 15.9 16.8 75.6 74.1 72.6 71.2 69.6 67.7 66.2 64.3 62.6 60.7 58.8 56.9 54.8 52.8 50.7 48.6 46.6 45.3 42.3 40.8 38.4 36.1 33.8 31.6 29.1 13.66 9.52 7.01 5.42 4.32 3.54 2.98 2.54 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 0.89 0.88 0.87 10 1.2262 20 2.3346 30 4.2474 40 7.3766 50 12.31 60 19.932 70 31.164 80 47.379 90 70.136 100 101.33 110 143.31 120 198.64 130 270.25 140 361.47 150 476.24 160 618.28 170 792.59 180 1003.5 190 1255.6 995.7 125.69 4.174 992.2 165.71 4.174 988.1 209.30 4.174 983.2 251.12 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 4.250 934.8 546.38 4.266 926.1 589.08 4.287 917.0 632.20 4.312 907.4 675.33 4.346 897.3 719.29 4.379 886.9 763.25 4.417 876.0 807.63 4.460 200 1554.77 863.0 852.43 4.505 210 1917.72 852.8 897.65 4.555 220 2320.88 840.3 943.70 4.614 230 2798.59 827.3 990.18 4.681 240 3347.91 813.6 1037.49 4.756 250 3977.67 799.0 1085.64 4.844 260 4693.75 784.0 1135.04 4.949 270 5503.99 767.9 1185.28 5.070 280 6417.24 750.7 1236.28 5.229 290 7443.29 732.3 1289.95 5.485 300 8592.94 712.5 1344.80 5.736 310 9877.96 691.1 1402.16 6.071 320 11300.3 667.1 1462.03 6.573 330 12879.6 640.2 1526.19 7.243 340 14615.9 610.1 1594.75 8.164 350 16538.5 574.4 1671.37 9.504 360 18667.1 528.0 1761.39 13.984 370 21040.9 450.5 1892.43 40.319 61.76 60.84 59.96 57.45 55.82 53.96 52.34 50.59 48.73 45.71 43.03 39.54 33.73 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 18.1 19.7 21.6 23.7 26.2 29.2 32.9 38.2 43.3 53.4 66.8 109 264 26.7 24.2 21.9 19.5 17.2 14.7 12.3 10.0 7.82 5.78 3.89 2.06 0.48 0.86 0.87 0.88 0.89 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 [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