Hot-wire visualization of the evolution of localized wave packets in a supersonic flat-plate boundary layer

Yatskikh, A. A.; Ermolaev, Yu. G.; Kosinov, A. D.; Семёнов, Н. В.

doi:10.1007/s12650-016-0414-2

Cited by 13 publications

(15 citation statements)

References 17 publications

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“…Artificial localized disturbances can be excited in the boundary layer by means of impulse action. In the case of supersonic flows, localized disturbances can be excited by a pulsed electric discharge [1,2]. It was shown in [2] that the energy and duration of the pulsed discharge affect on the localized perturbations generated in the supersonic boundary layer.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of supersonic flows, localized disturbances can be excited by a pulsed electric discharge [1,2]. It was shown in [2] that the energy and duration of the pulsed discharge affect on the localized perturbations generated in the supersonic boundary layer. To develop methods for investigating the laminar-turbulent transition in supersonic boundary layers with the help of controlled perturbations, detailed data on the influence of the parameters of the action on the generated perturbations are needed.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical investigation of excitation of artificial disturbances in the supersonic boundary layer

et al. 2019

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The influence of the parameters of the impulse action on the laminar supersonic flat-plate boundary layer on the excited localized perturbations is investigated at Mach 2. The influence of the duration of a pulsed discharge on the generated disturbances is studied experimentally. Also, a direct numerical simulation of the influence of the parameters of pulse injection on generated perturbations is carried out. It is obtained that as the duration of the action on the supersonic boundary layer increases, the amplitude of the generated disturbance increases. The velocity of the propagation downstream of localized disturbances in Mach 2 supersonic flat-plate boundary layer is estimated.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of excitation of artificial disturbances in the supersonic boundary layer

et al. 2019

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“…In [17][18][19] the technique of pulsed excitation of wave formations was developed and used to study the turbulence origin in a two-dimensional supersonic boundary layer. The evolution of the artificial wave packet in the boundary layer on a flat plate at M = 2 was studied in these works with the help of hot-wire measurements.…”

Section: Introductionmentioning

confidence: 99%

Excitation of localized wave packet in swept-wing supersonic boundary layer

et al. 2017

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The evolution of the artificial wave packet in swept-wing supersonic boundary layer was experimentally studied at M=2. The localized disturbances were generated by a pulse glow discharge. Measurements were provided by a hot-wire anemometer. The spatial structure of the wave packet was studied. It was found that the wave packet has an asymmetric shape. In addition, the velocity of the propagation downstream of the wave packet was estimated.

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“…В ИТПМ СО РАН подход контролируемых локализованных возмущений используется и активно развивается. В работах [13][14][15] локализованные возмущения генерируются в пограничном слое с помощью импульсного разряда, зажигающегося между двумя электродами, выведенными на поверхность экспериментальной модели. Исследования [14] показали, что энергия и длительность импульсного разряда влияют на пространственные масштабы и амплитуду генерируемых в пограничном слое возмущений.…”

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“…В работах [13][14][15] локализованные возмущения генерируются в пограничном слое с помощью импульсного разряда, зажигающегося между двумя электродами, выведенными на поверхность экспериментальной модели. Исследования [14] показали, что энергия и длительность импульсного разряда влияют на пространственные масштабы и амплитуду генерируемых в пограничном слое возмущений. Для развития методики возбуждения контролируемых локализованных возмущений необходимы систематизированные данные по влиянию на амплитуду и простраственные масштабы генерируемых возмущений таких параметров, как сила тока импульсного разряда и его длительность.…”

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Исследование Влияния Параметров Импульсного Разряда На Порождаемые В Сверхзвуковом Пограничном Слое Локализованные Возмущения

Яцких¹,

Ермолаев²,

Косинов³

et al. 2019

Письма В Журнал Технической Физики

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The results of experimental studies of the effect of the duration and current of a pulsed glow discharge on the generation of localized disturbances in the supersonic boundary layer of a flat plate at Mach numbers of the oncoming flow M = 3 and 4 have been presented. Flow pulsation measurements were performed by a hot-wire anemometer. It has been found that an increase in the duration of the impulse function leads to an increase in the amplitude and time scales of the perturbations that are generated in the boundary layer. An increase in the current of the pulse discharge leads to an increase in the amplitude of the generated pulsations. The propagation velocities in the boundary layer of localized perturbations at different Mach numbers of the oncoming flow have been estimated.

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Hot-wire visualization of the evolution of localized wave packets in a supersonic flat-plate boundary layer

Cited by 13 publications

References 17 publications

Experimental and numerical investigation of excitation of artificial disturbances in the supersonic boundary layer

Experimental and numerical investigation of excitation of artificial disturbances in the supersonic boundary layer

Excitation of localized wave packet in swept-wing supersonic boundary layer

Исследование Влияния Параметров Импульсного Разряда На Порождаемые В Сверхзвуковом Пограничном Слое Локализованные Возмущения

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