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

We establish Extended Thermodynamics (ET) of rarefied polyatomic gases withsix independent fields, i.e., the mass density, the velocity, the temperatureand the dynamic pressure, without adopting the near-equilibrium approximation.The closure is accomplished by the Maximum Entropy Principle (MEP) adopting adistribution function that takes into account the internal degrees of freedomof a molecule. The distribution function is not necessarily near equilibrium.The result is in perfect agreement with the phenomenological ET theory. To myknowledge, this is the first example of molecular extended thermodynamics witha non-linear closure. The integrability condition of the moments requires thatthe dynamical pressure should be bounded from below and from above. In thisdomain the system is symmetric hyperbolic. Finally we verify the K-conditionfor this model and show the existence of global smooth solutions.

Non-Linear Maximum Entropy Principle for a Polyatomic Gas subject to the Dynamic Pressure