Mean Free Path¶

Particula Index / Particula / Gas / Properties / Mean Free Path

Auto-generated documentation for particula.gas.properties.mean_free_path module.

molecule_mean_free_path¶

Calculate the mean free path of a gas molecule in air based on the temperature, pressure, and molar mass of the gas. The mean free path is the average distance traveled by a molecule between collisions with other molecules present in a medium (air).

Arguments¶

molar_mass (Union[float, NDArray[np.float64]]): The molar mass of the gas molecule [kg/mol]. Default is the molecular weight of air.
temperature (float): The temperature of the gas [K]. Default is 298.15 K.
pressure (float): The pressure of the gas [Pa]. Default is 101325 Pa.
dynamic_viscosity (Optional[float]): The dynamic viscosity of the gas [Pa*s]. If not provided, it will be calculated based on the temperature.

Returns¶

Union[float, NDArray[np.float64]]: The mean free path of the gas molecule in meters (m).

References¶

https://en.wikipedia.org/wiki/Mean_free_path

Signature¶

def molecule_mean_free_path(
    molar_mass: ignore = MOLECULAR_WEIGHT_AIR,
    temperature: float = 298.15,
    pressure: float = 101325,
    dynamic_viscosity: Optional[float] = None,
) -> Union[float, NDArray[np.float64]]: ...