Exergy as Lyapunov Function for Studying the Dynamic Stability of a Flow, Reacting to Self-Oscillation Excitation

Autor:	Dmitriy Vladimirovich Skiba, Ivan Alexandrovich Zubrilin, Denis Vladimirovich Yakushkin
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	reacting flow stability self-sustained oscillations combustion instability finite amplitude acoustic Technology Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Zdroj:	Applied Sciences, Vol 14, Iss 4, p 1453 (2024)
Druh dokumentu:	article
ISSN:	2076-3417 47179813
DOI:	10.3390/app14041453
Popis:	This article introduces a new, physically-based Lyapunov function definition that can be used as acoustic energy for finite-amplitude pressure oscillations in reacting systems, especially in combustion chambers. Reacting flow is seen as an open, non-equilibrium (parameters are distributed unevenly locally) thermodynamic system. This Lyapunov function is defined as the maximum mechanical work that could be extracted by a heat engine from the studied system if this system were disconnected from the inlet and outlet and from any other surrounding environment and the engine could transfer to the surrounding environment only mechanical work.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/dd07af383cd6436fbd82a471798137a5 Zobrazit plný text záznamu View record in DOAJ