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This formula, often called Sutherland's law, is based on kinetic theory of ideal gases and an idealized intermolecular-force potential. Sutherland's law is still commonly used and most often gives fairly accurate results with an error less than a few percent over a wide range of temperatures.
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Sutherland’s law, or Sutherland’s formula, is an approximation for how the viscosity of gases depends on the temperature. This law is based on an idealized intermolecular-force potential and reads ( Ref. 5 )
Sutherland's Law è una serie televisiva britannica in 46 episodi trasmessi per la prima volta nel corso di 5 stagioni dal 1973 al 1976. È una serie drammatica incentrata sulle vicende di John Sutherland, un procuratore fiscale della cittadina scozzese di Glendoran che indaga su vari casi e frodi di natura fiscale presentandoli poi ...
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Sutherland's Law is a television series made by BBC Scotland between 1973 and 1976. [1] The series had originated as a stand-alone edition of the portmanteau programme Drama Playhouse in 1972 in which Derek Francis played Sutherland and was then commissioned as an ongoing series.
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- Lindsay Galloway
- Iain Cuthbertson
Sutherland's law with three coefficients has the form. where, For air at moderate temperatures and pressures, kg/m-s, = 273.11 K, and = 110.56 K. Inputs for Sutherland's Law. To use Sutherland's law, choose sutherland in the drop-down list to the right of Viscosity.
At standard temperatures, Sutherland's law can be used for the absolute molecular viscosity of air, and is given by. (D.8) where is given in Kelvin. For air at lower temperatures (say below 100 K) and for nitrogen, Keyes model [215] for viscosity should be used.
Viscosity of Gases. The viscosity of a gas can be thought of as a measure of its resistance to flow and is measured in the CGS unit Poise = dyne sec/cm 2. The viscosity of gases near room temperature are in the centiPoise range, so that is a commonly used unit. Gas viscosity is only weakly dependent on pressure near atmospheric pressure.
