Viscosity of Air, Dynamic and Kinematic 空气的粘度，动态和运动的粘度

Viscosity of Air, Dynamic and Kinematic 空气的粘度，动态和运动的粘度

• Specific Heat of Air 空气的比热
• Density of Air 空气的密度
• Specific Heat of Air 空气的比热
• Thermal Conductivity of Air 空气的导热性
• Thermal Diffusivity of Air 空气的热扩散率
• Dynamic Viscosity of Air 空气的动态粘度
• Kinematic Viscosity of Air 空气的运动粘度
• Prandtl Number Air 空气的普朗特尔数

The viscosity of air depends mostly on the temperature. At 15 °C, the viscosity of air is 1.81 × 10^-5 kg/(m·s) , 18.1 μPa·s or 1.81 × 10^-5 Pa·s .

空气的粘度主要取决于温度。在15℃时，空气的粘度为1.81 × 10^-5 kg/(m·s) ，18.1 μPa·s或1.81 × 10^-5 Pa·s。

The kinematic viscosity of air at 15 °C is 1.48 × 10^-5 m² /s or 14.8 cSt. At 25 °C, the viscosity is 18.6 μPa·s and the kinematic viscosity 15.7 cSt.

15 °C时，空气的运动粘度为1.48 × 10^-5 m² /s或14.8 cSt。在25℃时，粘度为18.6 μPa·s，运动粘度为15.7 cSt。

Properties of air at 1 atm pressure

Temp T, °C	Density Air ρ, kg/m3	Specific Heat of Air cρ, J/kg-K	Thermal Conductivity Air k, W/m-K	Thermal Diffusivity Air α, m2/s	Dynamic Viscosity Air µ, kg/m-s	Kinematic Viscosity Air v, m2/s	Prandtl Number Air Pr
- 150	2.866	983	0.01171	4.158 x 10-6	8.636x 10-6	3.013 x 10-6	0.7246
- 100	2.038	966	0.01582	8.036x 10-6	1.189 x 10-5	5.837 x 10-6	0.7263
- 50	1.582	999	0.01979	1.252 x 10-5	1.474 x 10-5	9.319 x 10-6	0.7440
- 40	1.514	1002	0.02057	1.356 x 10-5	1.527 x 10-5	1.008 x 10-5	0.7436
- 30	1.451	1004	0.02134	1.465 x 10-5	1.579 x 10-5	1.087 x 10-5	0.7425
- 20	1.394	1005	0.02211	1.578 x 10-5	1.630 x 10-5	1.169 x 10-5	0.7408
- 10	1.341	1006	0.02288	1.696 x 10-5	1.680 x 10-5	1.252 x 10-5	0.7387
0	1.292	1006	0.02364	1.818 x 10-5	1.729 x 10-5	1.338 x 10-5	0.7362
5	1.269	1006	0.02401	1.880 x 10-5	1.754 x 10-5	1.382 x 10-5	0.7350
10	1.246	1006	0.02439	1.944 x 10-5	1.778 x 10-5	1.426 x 10-5	0.7336
15	1.225	1007	0.02476	2.009 x 10-5	1.802 x 10-5	1.470 x 10-5	0.7323
20	1.204	1007	0.02514	2.074 x 10-5	1.825 x 10-5	1.516 x 10-5	0.7309
25	1.184	1007	0.02551	2.141 x 10-5	1.849 x 10-5	1.562 x 10-5	0.7296
30	1.164	1007	0.02588	2.208 x 10-5	1.872 x 10-5	1.608 x 10-5	0.7282
35	1.145	1007	0.02625	2.277 x 10-5	1.895 x 10-5	1.655 x 10-5	0.7268
40	1.127	1007	0.02662	2.346 x 10-5	1.918 x 10-5	1.702 x 10-5	0.7255
45	1.109	1007	0.02699	2.416 x 10-5	1.941 x 10-5	1.750 x 10-5	0.7241
50	1.092	1007	0.02735	2.487 x 10-5	1.963 x 10-5	1.798 x 10-5	0.7228
60	1.059	1007	0.02808	2.632 x 10-5	2.008 x 10-5	1.896 x 10-5	0.7202
70	1.028	1007	0.02881	2.780 x 10-5	2.052 x 10-5	1.995 x 10-5	0.7177
80	0.9994	1008	0.02953	2.931 x 10-5	2.096 x 10-5	2.097 x 10-5	0.7154
90	0.9718	1008	0.03024	3.086 x 10-5	2.139 x 10-5	2.201 x 10-5	0.7132
100	0.9458	1009	0.03095	3.243 x 10-5	2.181 x 10-5	2.306 x 10-5	0.7111
120	0.8977	1011	0.03235	3.565 x 10-5	2.264 x 10-5	2.522 x 10-5	0.7073
140	0.8542	1013	0.03374	3.898 x 10-5	2.345 x 10-5	2.745 x 10-5	0.7041
160	0.8148	1016	0.03511	4.241 x 10-5	2.420 x 10-5	2.975 x 10-5	0.7014
180	0.7788	1019	0.03646	4.593 x 10-5	2.504 x 10-5	3.212 x 10-5	0.6992
200	0.7459	1023	0.03779	4.954 x 10-5	2.577 x 10-5	3.455 x 10-5	0.6974
250	0.6746	1033	0.04104	5.890 x 10-5	2.760 x 10-5	4.091 x 10-5	0.6946
300	0.6158	1044	0.04418	6.871 x 10-5	2.934 x 10-5	4.765 x 10-5	0.6935
350	0.5664	1056	0.04721	7.892 x 10-5	3.101 x 10-5	5.475 x 10-5	0.6937
400	0.5243	1069	0.05015	8.951 x 10-5	3.261 x 10-5	6.219 x 10-5	0.6948
450	0.4880	1081	0.05298	1.004 x 10-4	3.415 x 10-5	6.997 x 10-5	0.6965
500	0.4565	1093	0.05572	1.117 x 10-4	3.563 x 10-5	7.806 x 10-5	0.6986
600	0.4042	1115	0.06093	1.352 x 10-4	3.846 x 10-5	9.515 x 10-5	0.7037
700	0.3627	1135	0.06581	1.598 x 10-4	4.111 x 10-5	1.133 x 10-4	0.7092
800	0.3289	1153	0.07037	1.855 x 10-4	4.362 x 10-5	1.326 x 10-4	0.7149
900	0.3008	1169	0.07465	2.122 x 10-4	4.600 x 10-5	1.529 x 10-4	0.7206
1000	0.2772	1184	0.07868	2.398 x 10-4	4.826 x 10-5	1.741 x 10-4	0.7260
1500	0.1990	1234	0.09599	3.908 x 10-4	5.817 x 10-5	2.922 x 10-4	0.7478
2000	0.1553	1264	0.11113	5.664 x 10-4	6.630 x 10-5	4.270 x 10-4	0.7539