Analysis of Flow State of Inflatable Support Area in Aerostatic Guide Way under Condition of Rarefied Gas

Based on the molecular motion and collision law of the gas in the aerostatic guide way of inflatable support area, proposed the stratification theory of the gas film, the gas in in- flatable support area was divided into near wall layer, thin layer, continuous flow layer along its height direction, proposed basis for dividing the thin layer and continuous flow layer, proposed physical model and the corresponding equation. Based on air film pressure decreasing in the aerostatic guide way and rate variation of gas flow, the gas in the longitudinal direction was di- vided into pressure-driven area and Newton friction area. Simulating flow patterns and calculat- ing its velocity and pressure in gas film by LAMMPS and fluent, drew the relevant conclusions: the gas film in the longitudinal direction was divided into pressure-driven area and Newton fric- tion area; and it also was divided into near wall layer, thin layer, continuous flow layer along its height direction; gas stratification present in the pressure-driven and Newton friction areas; the phenomenon of film layered became weaker with slower gas flow in pressure-driven area; New- ton friction area remained stable stratification.