View source: R/meteorological_variables.r
kinematic.viscosity | R Documentation |
calculates the kinematic viscosity of air.
kinematic.viscosity(Tair, pressure, constants = bigleaf.constants())
Tair |
Air temperature (deg C) |
pressure |
Atmospheric pressure (kPa) |
constants |
Kelvin - conversion degree Celsius to Kelvin |
where v is the kinematic viscosity of the air (m2 s-1), given by (Massman 1999b):
v = 1.327 * 10^-5(pressure0/pressure)(Tair/Tair0)^1.81
v - |
kinematic viscosity of air (m2 s-1) |
Massman, W.J., 1999b: Molecular diffusivities of Hg vapor in air, O2 and N2 near STP and the kinematic viscosity and thermal diffusivity of air near STP. Atmospheric Environment 33, 453-457.
kinematic.viscosity(25,100)
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