Pressure effects on aerodynamic losses and load capacity of the lubrication layer for various noble gases

Article

Published: 08.07.2025

Published in issue: #7(163)/2025

DOI: 10.18698/2308-6033-2025-7-2458

Category: Mechanics | Chapter: Mechanics of Liquid, Gas, and Plasma

Gas lubrication is widely used in industry; therefor, its mathematical simulation becomes an urgent research problem. Computing a gas flow requires correct determination of its thermophysical properties, which inevitably raises a question of the macroscopic parameters influence on them, including the pressure and temperature. In particular, results of numerous experiments demonstrate that the increasing pressure causes diversity in the viscosity values from the Chapman-Enskog theory forecasts. The presented study proposes the existing methodology for accounting for the high-pressure effect on properties of the inert gases binary mixtures to be applied to computation of the most important characteristics of the gas lubricating layer, including the aerodynamic losses and the bearing capacity. The paper provides quantitative assessment of the indicated effects in the temperature range of 400…1200K and pressure of 1…7 MPa. The considered method could be applied in compiling and optimizing the program codes to solve the gas lubrication problems.

EDN ACUUZO

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