Sutherland’s law is a mathematical relationship that describes the temperature variation of the dynamic viscosity (viscosity coefficient) of a gas as a function of temperature. This law is particularly applicable to monatomic and diatomic gases over a limited temperature range. Sutherland’s law is used to estimate the viscosity of a gas at temperatures different from the reference temperature at which the viscosity is known.
- Dynamic viscosity at temperature T (μ(T)) in kg/m*s
- Sutherland’s constant (S)
- Reference viscosity at a reference temperature (𝜇0) in kg/m*s
- Absolute temperature (T) in K
- Reference temperature (T0) in K