Rayleigh-Brillouin scattering spectra of SF6 are modeled at room temperature in the pressure range [0.2–5] bar and compared to recent experimental measurements (Wang et al., 2017). It is shown that lineshape models that account for density-dependent corrections to the thermodynamic properties provide substantially better agreement than the models assuming an ideal gas model. For intermediate pressures, where a hydrodynamic description of the spectra fails due to kinetic effects, the Enskog-Vlasov kinetic model is shown to reproduce experimental data with good accuracy both at low and high pressure.

Dense gas effects in the Rayleigh-Brillouin scattering spectra of SF6

Frezzotti, A.
2019

Abstract

Rayleigh-Brillouin scattering spectra of SF6 are modeled at room temperature in the pressure range [0.2–5] bar and compared to recent experimental measurements (Wang et al., 2017). It is shown that lineshape models that account for density-dependent corrections to the thermodynamic properties provide substantially better agreement than the models assuming an ideal gas model. For intermediate pressures, where a hydrodynamic description of the spectra fails due to kinetic effects, the Enskog-Vlasov kinetic model is shown to reproduce experimental data with good accuracy both at low and high pressure.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1095479
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