Harnessing random low Reynolds number flow for net migration

Morita, Takeru; Omori, Toshihiro; Nakayama, Yohei; Toyabe, Shoichi; Ishikawa, Takuji

doi:10.1103/physreve.101.063101

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…08.55132.19506 Все реальные течения и технические системы подвержены шумовым воздействиям. Возможности использования внешнего шума учитываются при разработке технологий и устройств для извлечения энергии из ветровых и волновых потоков [1]. В течениях во вращающемся сферическом слое, которые и являются предметом исследования настоящей работы, добавление " белого" шума в виде случайных флуктуаций скорости вращения внутренней сферы может приводить к смене волнового числа при потере устойчивости [2], снижению предела устойчивости и генерации средних течений [3].…”

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Влияние Шумов С Различными Спектрами На Течения Вязкой Несжимаемой Жидкости

Жиленко¹,

Кривоносова²

2023

Письма В Журнал Технической Физики

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The results of an experimental study of the effects of noises on flows in a rotating spherical layer are presented. Noise is introduced into the flow in the form of random fluctuations of the inner sphere rotational rate relative to a time constant mean value. The flow velocity was measured with a laser Doppler anemometer. It was found that the noises of the equal amplitude, but with different spectra cause the generation of mean flows of different intensity. It is shown that the increase in the average velocities under the action of the noise is larger for the stable flows compared to unstable ones.

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unclassified

Влияние Шумов С Различными Спектрами На Течения Вязкой Несжимаемой Жидкости

Жиленко¹,

Кривоносова²

2023

Письма В Журнал Технической Физики

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“…All real-world flows and technical systems are subjected to the influence of noise. The potential use of external noise is taken into account in the engineering of process techniques and devices for energy extraction from wind and wave flows [1]. The addition of " white" noise in the form of random fluctuations of the rotation rate of the inner sphere to flows in a rotating spherical layer, which are examined in the present study, may induce a change in the wave number with loss of stability [2], lower the stability limit, and lead to generation of mean flows [3].…”

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confidence: 99%