Abstract
In nonequilibrium flow of dense gases composed of hard-sphere molecules, a kinetic model is needed to simplify the Enskog equation and reduce computational cost, while also preserving the most important physical properties of high-density gas systems, including the correct transport coefficients. Moreover, density inhomogeneity in the vicinity of a solid boundary, which may influence transport processes, has been overlooked. We have developed such a model using a method based on density functional theory. The inhomogeneous density near the solid wall is found to enhance the oscillation amplitude, while the bulk viscosity causes stronger sound wave attenuation.
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