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1.225 kg m −3: Kinematic viscosity 1.4607 × 10 −5 m 2 s −1: Dynamic viscosity 1.7894 × 10 −5 kg m −1 s −1: Molar volume 2.3645 × 10 −2 m 3 mol −1: Molecular weight 28.966 Thermal conductivity 2.5339 × 10 −2 W m −1 K −1: Mean free path 6.6317 × 10 −8 m Collision frequency 6.9204 × 10 9 s −1: Particle speed 4.5894 ...
To allow modeling conditions below mean sea level, the troposphere is actually extended to −2,000 feet (−610 m), where the temperature is 66.1 °F (18.9 °C), pressure is 15.79 pounds per square inch (108,900 Pa), and density is 0.08106 pounds per cubic foot (1.2985 kg/m 3).
Kinematic viscosity has units of square feet per second (ft 2 /s) in both the BG and EE systems. Nonstandard units include the reyn (lbf·s/in 2), a British unit of dynamic viscosity. [30] In the automotive industry the viscosity index is used to describe the change of viscosity with temperature.
Consequently, if a liquid has dynamic viscosity of n centiPoise, and its density is not too different from that of water, then its kinematic viscosity is around n centiStokes. For gas, the dynamic viscosity is usually in the range of 10 to 20 microPascal-seconds, or 0.01 to 0.02 centiPoise. The density is usually on the order of 0.5 to 5 kg/m^3.
Standard sea-level conditions (SSL), [1] also known as sea-level standard (SLS), defines a set of atmospheric conditions for physical calculations.The term "standard sea level" is used to indicate that values of properties are to be taken to be the same as those standard at sea level, and is done to define values for use in general calculations.
Date/Time Thumbnail Dimensions User Comment; current: 12:33, 25 December 2010: 518 × 382 (60 KB): Stan J Klimas {{Information |Description={{en|1=Dynamic viscosity of dry air as a function of pressure for selected temperatures.
Here dynamic viscosity is denoted ... Dry air: 3.617 97.0 Helium: 2.576 10.2 Hydrogen: 2.915 ... Comprehensive tables of these parameters for hundreds of liquids can ...
The capillary number is defined as: [2] [3] C a = μ V σ {\displaystyle \mathrm {Ca} ={\frac {\mu V}{\sigma }}} where μ {\displaystyle \mu } is the dynamic viscosity of the liquid, V {\displaystyle V} is a characteristic velocity and σ {\displaystyle \sigma } is the surface tension or interfacial tension between the two fluid phases.