Autoregression method for determining the decrement and frequency of the natural oscillations of a gas in a combustion chamber

Karmalita, Viacheslav; Фурлетов, В. И.

doi:10.1007/bf00742523

Combust Explos Shock Waves

1987

DOI: 10.1007/bf00742523

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Autoregression method for determining the decrement and frequency of the natural oscillations of a gas in a combustion chamber

Viacheslav Karmalita¹,

В. И. Фурлетов²

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Cited by 3 publications

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Influence of Turbulent Combustion Noise on the Decrement Estimates of Gas Oscillations

Karmalita

2018

Journal of Heat Transfer

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This paper deals with the autoregression method to determine the logarithmic decrement and natural frequency of gas oscillations in a combustion chamber. The proposed approach to quantify the impact of combustion noise on the estimates of oscillation decrement is based on a linear model of the vibrating combustion phenomena. An application of the proposed approach for afterburner tests is presented as well.

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Influence of Turbulent Combustion Noise on the Decrement Estimates of Gas Oscillations

Karmalita

2018

Journal of Heat Transfer

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Yule Series Model Application for Blade Tip Timing Readouts Processing Resulting in Blade Oscillation Characteristics Estimation

Karmalita

2018

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems

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This paper deals with an application of the Yule series model for contactless (blade tip timing, BTT) measurements. The approach creates a straightforward processing procedure from the experimental data to obtain estimates of blade logarithmic decrement and natural frequency. The existing analytical expressions for confidence intervals enable a priori evaluation for the accuracy of blade oscillation characteristics estimates. Proposed sensors allocation scheme ensures oscillation sampling rates providing efficient estimates of oscillation characteristics. Real-time measurements of blade logarithmic decrement and natural frequency give a chance of this method implementation for research and health monitoring purposes.

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Numerical Simulation of Gas Self-Oscillations in Gas Turbine Combustors

Drobysh,

Dubovitskii,

Lebedev

et al. 2024

Combust Explos Shock Waves

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Autoregression method for determining the decrement and frequency of the natural oscillations of a gas in a combustion chamber

Cited by 3 publications

References 3 publications

Influence of Turbulent Combustion Noise on the Decrement Estimates of Gas Oscillations

Influence of Turbulent Combustion Noise on the Decrement Estimates of Gas Oscillations

Yule Series Model Application for Blade Tip Timing Readouts Processing Resulting in Blade Oscillation Characteristics Estimation

Numerical Simulation of Gas Self-Oscillations in Gas Turbine Combustors

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