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Nov 4, 2012 · Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600°C (-150 to 2900°F) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units.
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 . The kinematic viscosity of air at 15 °C is 1.48 × 10 -5 m 2 /s or 14.8 cSt.
Nov 4, 2012 · Dynamic (absolute) viscosity is the tangential force per unit area required to move one horizontal plane with respect to an other plane - at an unit velocity - when maintaining an unit distance apart in the fluid.
Nov 4, 2012 · Online calculator, figures and tables with dynamic (absolute) and kinematic viscosity for air at temperatures ranging -100 to 1600°C (-150 to 2900°F) and at pressures ranging 1 to 10 000 bara (14.5 - 145000 psia) - SI and Imperial Units.
Mar 29, 2015 · The properties of Air have been tabulated below, listed by temperature in ascending order. The properties listed are density, viscosity specific heat capacity, thermal conductivity and Prandtl number. Below this table is an image version for offline viewing. Note: Pay attention to the units for viscosity.
The value of the dynamic viscosity coefficient is found to be a constant with pressure but the value depends on the temperature of the gas. For air, D. M. Sutherland provides an equation for the dependence on temperature T: mu = mu0 * ((T / T0)^1.5) * ((T0 + 198.72) / (T + 198.72))
Experiment confirms that Eq. (52) gives a good description of the viscosity effects in a broad range of isotropic fluids. The coefficient \(\eta\) is called either the shear viscosity, or the dynamic viscosity, or just viscosity, while \(\zeta\) is called the second (or bulk) viscosity.
The first is dynamic viscosity, also known as absolute viscosity, which measures a fluid’s resistance to flow. In precise terms, dynamic viscosity is the tangential force per unit area necessary to move one plane past another at unit velocity at unit distance apart.
Find the dynamic (absolute) and kinematic viscosity of air at different temperature values in both SI and US customary units.
Under standard atmospheric conditions (25 °C and pressure of 1 bar), the dynamic viscosity of air is 18.5 μPa·s, roughly 50 times smaller than the viscosity of water at the same temperature. Except at very high pressure, the viscosity of air depends mostly on the temperature.
