Parameters | Short description |

$\frac{\partial}{\partial y}$ | the divergence operator in a one-dimensional configuration |

| position of the ending point of the converging particle |

${y}^{\prime}$ | position of the starting point of the converging particle |

$u\left(y\right)$ | mass flow velocity in the point |

${v}_{T}\left(y\right)$ | the average magnitude of the thermal velocity of converging particle in point |

${Z}_{V}\left({y}^{\prime}\right)$ | the rate of collisions per unit volume at the point of the collision ${y}^{\prime}$ |

$\overrightarrow{v}\left(y\right)$ | velocity vector in the ending point |

${Q}_{i}\left({y}^{\prime},y\right)$ | the probability of free path traveling along the ballistic trajectory of the converging ballistic trajectory starting at ${y}^{\prime}$ and ending |

${\Psi}_{out}\left(y\right)$ | property content of a diverging point |

${\Psi}_{in}\left({y}^{\prime}\right)$ | property content of a diverging point ${y}^{\prime}$ particle and heading to |

| incompressible gas particles density |

${n}_{ef}\left({y}^{\prime}\right)$ | effective gas-particle density in point ${y}^{\prime}$ associated with particles carrying transported property |

| particle mass |

${\sigma}_{c}$ | the cross-section of collisions |

${P}_{c}={\sigma}_{c}n$ | the number of particles placed within a collision tube of a unit length |

${y}_{b1}$ | a position of the upper plate of the micro-channel |

${y}_{b2}$ | a position of the lower plate of the micro-channel |

| the volume of integration over space occupied by the model gas |

${v}_{+}\left(y,{y}^{\prime}\right)$ | the velocity vector of the diverging particle in point ${y}^{\prime}$ |

${Q}_{+}\left(y,{y}^{\prime}\right)$ | the probability of free path traveling along the ballistic trajectory from |

${B}_{in}^{\Psi \text{\_}FS}\left(y\right)$ | the net rate of property influx per unit volume from the model gas system |

${B}_{in}^{\Psi \text{\_}F}\left(y\right)$ | the net rate of property influx per unit volume from the surrounding gas (trajectories 303 and 304) |

${B}_{in}^{\Psi \text{\_}BD}\left(y\right)$ | the net rate of property influx per unit volume from the boundaries (trajectories 315 and 316, diffuse component) |

${Q}_{21}=\mathrm{exp}\left(-{P}_{c}H\right)$ | the probability of free path traveling along the ballistic trajectory between confining plates in incompressible gas |