Abstract: This paper presents the linear stability analysis of a swirling flow in a model combustion chamber. The flow features a strongly coherent component associated with vortex core precession. Global stability analysis was performed on the mean field obtained via the large eddy simulations, incorporating turbulent viscosity. The eigenvalue spectrum revealed a mode with a dimensionless frequency of 0.76. Its eigenfunction distributions indicated that this mode corresponds to a precessing vortex core (PVC). These findings confirms that the PVC is a global unstable mode developing in a mean turbulent flow and will serve as a basis for further work on the development of PVC control strategies.

Cite: Lutchenko I.I. , Proskurin A.V. , Palkin E.V. , Mullyadzhanov R.I. , Alekseenko S.V.
Global stability analysis of isothermal swirling flow in a model combustion chamber
Thermophysics and Aeromechanics. 2026. V.33. N1. P.143-149. DOI: 10.1134/s086986432601018x WOS Scopus OpenAlex

Original: Лутченко И.И. , Проскурин А.В. , Палкин Е.В. , Мулляджанов Р.И. , Алексеенко С.В.
Глобальный анализ устойчивости изотермического закрученного потока в модельной камере сгорания
ТЕПЛОФИЗИКА И АЭРОМЕХАНИКА. 2026. №1. С.151-157. DOI: 10.63430/TIA202601018 OpenAlex

Dates:

Submitted:	Sep 18, 2025
Accepted:	Dec 22, 2025
Published print:	Jul 25, 2026

Identifiers:

≡ Web of science:	WOS:001830955900010
≡ Scopus:	2-s2.0-105045534476
≡ OpenAlex:	W7171179301

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