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Teplofizika vysokikh temperatur, 2004, Volume 42, Issue 6, Pages 900–907
(Mi tvt1607)
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This article is cited in 2 scientific papers (total in 2 papers)
Heat and Mass Transfer and Physical Gasdynamics
Increasing the force with which a shock discharged from the acts on an
obstacle by way of converting a normal pressure shock to a system of oblique shocks
T. V. Bazhenova, V. V. Golub, A. L. Kotel'nikov, A. S. Chizhikov, M. V. Bragin, S. B. Shcherbak Institute of Extremal States Thermophysics, Scientific Association for High Temperatures, Russian Academy of Sciences, Moscow
Abstract:
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.
Received: 04.12.2003
Citation:
T. V. Bazhenova, V. V. Golub, A. L. Kotel'nikov, A. S. Chizhikov, M. V. Bragin, S. B. Shcherbak, “Increasing the force with which a shock discharged from the acts on an
obstacle by way of converting a normal pressure shock to a system of oblique shocks”, TVT, 42:6 (2004), 900–907; High Temperature, 42:6 (2004), 911–918
Linking options:
https://www.mathnet.ru/eng/tvt1607 https://www.mathnet.ru/eng/tvt/v42/i6/p900
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Abstract page: | 275 | Full-text PDF : | 88 |
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