空气的密度粘度随温度的变化表

干空气的物理性质

密度ρ/kg·m-3比定压热容cp/kJ·kg-1·温度t/℃

K-1

-501.584-401.515-301.453-201.395-101.34201.293101.247201.205301.1601.128501.093601.06701.029

801900.9721000.9461200.81400.81600.8151800.7792000.7462500.6743000.6153500.56000.5245000.4566000.4047000.3628000.3299000.30110000.27711000.2571200

0.239

1.0131.0131.0131.0091.0091.0091.0091.0131.0131.0131.0171.0171.0171.0221.0221.0221.0261.0261.0261.0341.0341.0431.0471.0551.0681.0721.01.1021.1141.1271.1391.1521.1

导热系数λ/10-2W·m-1·K-1 粘度μ/10-5Pa·s

2.0352.1172.1982.2792.362.4422.5122.5932.6752.7562.8262.62.9663.0473.1283.213.3383.43.3.783.9314.2684.60.9085.215.7456.2226.7117.1767.638.0718.5029.153

普兰德数Pr1.461.521.571.621.671.721.761.811.861.911.962.012.062.112.152.192.282.372.452.532.62.742.973.143.33.623.914.184.434.674.95.125.35

0.7280.7280.7230.7160.7120.7070.7050.7030.7010.6990.6980.6960.6940.6920.690.6880.6860.6840.6820.6810.680.6770.6740.6760.6780.6870.6990.7060.7130.7170.7190.7220.724