Нелокальне рівняння стану: критичні явища та колективне збудження

Non-local properties of the thermal equation of state of a fluid system are observed for the wide range of changes of thermodynamic parameters. Density profiles of a fluid, which are constructed by the non-local equation of state, show that significant changes of system’s density occur in a signific...

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Datum:2021
Hauptverfasser: Bulavin, L.A., Gavryushenko, D.A., Sysoev, V.M.
Format: Artikel
Sprache:English
Veröffentlicht: Publishing house "Academperiodika" 2021
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Online Zugang:https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2020011
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Назва журналу:Ukrainian Journal of Physics

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Ukrainian Journal of Physics
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Zusammenfassung:Non-local properties of the thermal equation of state of a fluid system are observed for the wide range of changes of thermodynamic parameters. Density profiles of a fluid, which are constructed by the non-local equation of state, show that significant changes of system’s density occur in a significant part of the volume in the case of approaching the critical liquid-vapor point. The application of the non-local thermal equation of state as a closure of the equations of classical hydrodynamics allowed us to obtain the spectrum of collective excitations which is similar to the spectrum of excitations in liquid helium.