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Разработка методики измерения длинноволновых компонент частотно-волнового спектра турбулентных пристеночных пульсаций давления

Разработка методики измерения длинноволновых компонент частотно-волнового спектра турбулентных пристеночных пульсаций давления

Abstract

Проанализированы основные источники ошибок, препятствующие измерению частотно-волнового спектра пристеночных пульсаций давления турбулентного пограничного слоя в длинноволновой области. Такие измерения необходимы для вычисления колебаний обшивки фюзеляжа, связанных с ее инерционным возбуждением, и оценки определяемых ими уровней шума в салоне самолета. Для каждого источника ошибки получены оценки и зависимости от параметров потока и измерительной системы. Исходя из моделей частотноволнового спектра автор обосновывает границы применимости различных антенн и разрабатывает метод оптимизации расположения датчиков давления, позволяющий провести измерения с заданной точностью, используя минимальное число приемников давления как в одномерном, так и в двумерном случае.

Keywords

ЧАСТОТНО-ВОЛНОВОЙ СПЕКТР,ТУРБУЛЕНТНЫЕ ПУЛЬСАЦИИ,СТРУКТУРНАЯ АКУСТИКА

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    popularity
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average