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Баженова, Т. В.; Golub, V. V.; Kotel’nikov, A. L.; Chizhikov, A. S.; Shcherbak, S. B.

doi:10.1023/a:1024241607038

Cited by 3 publications

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“…It has been demonstrated in 912 BAZHENOVA, GOLUB, KOTEL'NIKOV et al [8,9] that, when a shock wave discharged from a square channel interacts with an obstacle, an increase in the Mach number of the flow before the stagnation shock contributes to the increase in the total pressure loss compared to the loss when a shock wave is discharged from a round channel. It has been demonstrated in [10] that, when a shock wave is discharged from a channel of cross-shaped cross section, the pressure at the obstacle center is four times that in the case of discharge from a round channel with the initial Mach number of the shock wave equal to three. We have investigated the interaction of shock waves discharged from a channel of cross-shaped cross section with an obstacle over the entire channel length.…”

Section: Introductionmentioning

confidence: 99%

Increasing the force with which a shock wave discharged from the channel acts on an obstacle by way of converting a normal pressure shock to a system of oblique shocks

et al. 2004

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The results are given of experimental and numerical investigations of the effect produced on an obstacle by shock waves discharged from channels of different cross-sectional shapes (circle, square, cross). The pressure distribution on an obstacle mounted normally to the flow axis is measured. The experimental results are compared to the data of numerical calculation for determining the optimal modes as regards the duration of calculation and the cell size that produce the least difference between the experimental and numerical data. Calculations are performed of the gas flow behind a shock wave discharged from a channel of X-shaped cross section, and the distribution of pressure and temperature over the obstacle surface is plotted. It is found that the force with which a flow acts on an obstacle when discharged from a channel of X-shaped cross section is much greater than in the case of being discharged from a channel of round or square cross section. Shadow photographs show that this is due to the reduction of the loss of total pressure in the flow because of the conversion of the normal pressure shock to a system of oblique shocks.

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Section: Introductionmentioning

confidence: 99%

Increasing the force with which a shock wave discharged from the channel acts on an obstacle by way of converting a normal pressure shock to a system of oblique shocks

et al. 2004

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Half a century of continuous shock interaction investigations in the Joint Institute for High Temperatures of Russian Academy of Sciences

et al. 2014

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The flow generated inside a duct after it expels a shock wave

Biamino

Igra

Jourdan

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part G:

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International audienceThe flow field that evolves inside a duct upon the departure of a shock wave from its open exit is studied experimentally. The present investigation covers a relatively long time period, almost until the shock-induced flow inside the duct ceases. During the investigated time period, the appearance of a second shock wave is observed inside the duct. The effect of introducing a door inclined to the duct's exit plane, on the pressure field developed behind the second shock is reported. Three different inclination angles are studied, 30 degrees, 45 degrees, and 90 degrees relative to the duct's exit plane. It is shown that keeping the exit door at different angles and, thereby changing the size of the exit area, has a direct effect on the pressures prevailing inside the tube and on the exit door. The highest pressure on the door and the lowest pressure behind the second shock wave are observed when the exit door is kept at an angle of 30 degrees

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Cited by 3 publications

References 3 publications

Increasing the force with which a shock wave discharged from the channel acts on an obstacle by way of converting a normal pressure shock to a system of oblique shocks

Increasing the force with which a shock wave discharged from the channel acts on an obstacle by way of converting a normal pressure shock to a system of oblique shocks

Half a century of continuous shock interaction investigations in the Joint Institute for High Temperatures of Russian Academy of Sciences

The flow generated inside a duct after it expels a shock wave

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