Momentum and Temperature-Slip Coefficients with Arbitrary Accommodation at the Surface

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Abstract
Accurate theoretical expressions for momentum and temperature‐slip coefficients for monatomic gases with arbitrary accommodation at the surface are derived by applying a variational technique to the full linearized Boltzmann equation. In the jump regimes, the use of these expressions appears preferable to the use of the previous results based on mean‐free‐path theory or numerical methods. As an example, a correction in the reported values of accommodation coefficients is suggested.