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Доплеровский ультразвуковой контроль открытого воздушного потока

Доплеровский ультразвуковой контроль открытого воздушного потока

Abstract

Предложена система дистанционного ультразвукового контроля воздушных потоков. Для оценки параметров потока используются доплеровские спектры обратного рассеяния ультразвукового сигнала на турбулентных флуктуациях. Результаты экспериментальных измерений и приближенных модельных расчетов качественно согласуются. Показано, что для оценки параметров потока необходимо анализировать как среднюю частоту доплеровского сдвига, так и ширину (форму) доплеровского спектра ультразвукового сигнала.

The article proposes a system for remote ultrasonic control of air flow. Doppler spectra of backscattered ultrasound signal on the turbulent fluctuations are used to estimate the flow parameters. The results of experimental measurements and approximate model calculations are in agreement. To estimate the flow parameters it is necessary to analyze both the average frequency of Doppler shift and width (form) of the Doppler spectrum of the ultrasonic signal.

Keywords

УЛЬТРАЗВУК, ДОПЛЕРОВСКИЕ СПЕКТРЫ, ВОЗДУШНЫЙ ПОТОК, ДИСТАНЦИОННЫЙ КОНТРОЛЬ

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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
gold