Effect of wall heat transfer on shock-tube test temperature at long times

Frazier, Corey; Lamnaouer, Mouna; Divo, Eduardo; Kassab, Alain J.; Petersen, Eric L.

doi:10.1007/s00193-010-0282-y

Cited by 19 publications

(5 citation statements)

References 16 publications

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“…(5)The boundary is set to a non reflective boundary condition. (6)The gas mixture is evenly mixed at room temperature and the specific heat capacity follows the mixing rules. (7)There are no obstacles inside the roadway.…”

Section: Assumed Conditions and Mathematical Equationmentioning

confidence: 99%

“…Gas explosion accident in coal mine will not only cause casualties of operators in the roadway, but also destroy the roadway wall structure and mine ventilation facilities, resulting in adverse social impact [1][2][3]. In order to effectively control the damage caused by gas explosion, many scholars have studied the propagation characteristics and damage mechanism of gas explosion, and have analyzed the influencing factors, propagation law, the destructive effect of gas explosion and formulated various measures to prevent and suppress explosion, and achieved fruitful results [4][5][6][7][8][9][10][11][12][13]. However, the damage characteristics of roadway wall under the impact of gas explosion need to be deeply analyzed.…”

Section: Introductionmentioning

confidence: 99%

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Damage Characteristics of Roadway Wall under the Impact of Gas Explosion

Zhenzhen

et al. 2022

J. Phys.: Conf. Ser.

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In order to explore the damage process and characteristics of roadway wall under the impact of gas explosion, in this paper, the numerical model of gas explosion in roadway is established, and the explosion impact response of roadway wall and the stress change of gas explosion in roadway wall are analyzed. The results show that the impact produced by gas explosion is repeatedly reflected and superimposed on the wall, resulting in the high peak overpressure and duration growth in the explosion load process formed in the roadway. The shock wave propagation of gas explosion in wall is dynamic, and will produce tensile stress and compressive stress, causing damage to the interior of the wall. It will drive the wall structure of adjacent areas to move along the action direction of explosion load, resulting in the overall instability and damage of roadway wall structure. The research results can provide reference for gas explosion disaster prevention and explosion accident identification.

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Section: Assumed Conditions and Mathematical Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Damage Characteristics of Roadway Wall under the Impact of Gas Explosion

Zhenzhen

et al. 2022

J. Phys.: Conf. Ser.

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“…The interaction of high-speed gas-dynamic flows with streamlined surfaces has always been a significant problem both in fundamental science and in practical applications. The emerging heat exchange between the gas flow and solid streamlined walls of various geometry in the boundary layers introduces significant changes in the nature of the flow and the state of the gaseous medium [1][2][3]. The need to analyze complex heat and gas dynamic processes has led to great attention to the various flow visualization methods.…”

Section: Introductionmentioning

confidence: 99%

Heat Fluxes Visualization in High Speed Flow behind the Shock Wave

Znamenskaya,

Muratov,

Karnozova

et al. 2023

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The paper presents the thermographic studies of unsteady heat fluxes behind a plane shock wave in the rectangular 24x48 mm shock tube test section. Consecutive panoramic visualization of the heat fluxes plots on streamlined walls after the plane shock wave interaction with a rectangular obstacle fixed on the channel wall are obtained. The duration of the recorded thermal processes is up to 40 milliseconds after the shock wave passage. The heating and cooling of the test chamber walls streamlined by supersonic flow are visualized using the Telops FAST M200 high-speed infrared camera (operating range 1.5 – 5.1 microns) through the quartz windows transparent to infrared radiation. Visualization of the thermal fields were compared with the shadow images and results of 2D numerical simulation of a nonstationary gas dynamic process after the diffraction of a shock wave with Mach numbers M=2.0-4.5.

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“…Эффекты пограничного слоя приводят к пространственному перераспределению скорости, температуры, плотности за отраженной волной, что важно учитывать, в частности, в химико-кинетических экспериментах [2]. Формирование вязкого динамического пограничного слоя [3] сказывается на быстром нарастании приграничного теплового слоя [4]. В случае достаточно тонких стенок экспериментальных стендов это требует учета неадиабатичности процессов с теплообменом на границе газа с внешней относительно стенда средой.…”

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Визуализация Эволюции Тепловых Полей При Отражении Ударной Волны От Торца Канала Ударной Трубы

Знаменская¹,

Муратов²

2023

Письма В Журнал Технической Физики

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Panoramic thermographic visualization of a non-stationary thermal fields on the rectangular shock tube end wall was carried out. Thermal fields evolution of outer (end wall) surface during shock wave reflection is studied. Heat fluxes distribution data were obtained at various times within 4 seconds after reflection. The influence of the boundary layer on heat transfer behind the reflected shock wave is analyzed.

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Effect of wall heat transfer on shock-tube test temperature at long times

Cited by 19 publications

References 16 publications

Damage Characteristics of Roadway Wall under the Impact of Gas Explosion

Damage Characteristics of Roadway Wall under the Impact of Gas Explosion

Heat Fluxes Visualization in High Speed Flow behind the Shock Wave

Визуализация Эволюции Тепловых Полей При Отражении Ударной Волны От Торца Канала Ударной Трубы

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