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Spatial stochasticity and non-continuum effects in gas flows

Dadzie, Kokou and Reese, Jason (2012) Spatial stochasticity and non-continuum effects in gas flows. Physics Letters A, 376 (8-9). pp. 967-972. ISSN 0375-9601

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Abstract

We investigate the relationship between spatial stochasticity and non-continuum effects in gas flows. A kinetic model for a dilute gas is developed using strictly a stochastic molecular model reasoning, without primarily referring to either the Liouville or the Boltzmann equations for dilute gases. The kinetic equation, a stochastic version of the well-known deterministic Boltzmann equation for dilute gas, is then associated with a set of macroscopic equations for the case of a monatomic gas. Tests based on a heat conduction configuration and sound wave dispersion show that spatial stochasticity can explain some non-continuum effects seen in gases.