English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Polyatomic gases find numerous applications across various scientific andtechnological fields, necessitating a quantitative understanding of theirbehavior in non-equilibrium conditions. In this study, we investigate thebehavior of rarefied polyatomic gases, particularly focusing on heat transferand sound propagation phenomena. By utilizing a two-temperature model, weestablish constitutive equations for internal and translational heat fluxesbased on the second law of thermodynamics. A novel reduced two-temperaturemodel is proposed, which accurately describes the system's behavior whilereducing computational complexity. Additionally, we develop phenomenologicalboundary conditions adhering to the second law, enabling the simulation ofgas-surface interactions. The phenomenological coefficients in the constitutiveequations and boundary conditions are determined by comparison with relevantliterature. Our computational analysis includes conductive heat transferbetween parallel plates, examination of sound wave behavior, and exploration ofspontaneous Rayleigh-Brillouin scattering. The results provide valuableinsights into the dynamics of polyatomic gases, contributing to varioustechnological applications involving heat transfer and sound propagation.

H-Theorem and Boundary Conditions for Two-Temperature Model: Application to Wave Propagation and Heat Transfer in Polyatomic Gases