Evolution of disturbances in the shock layer on a flat plate in the flow of a mixture of vibrationally excited gases
The results of the numerical and experimental investigations of the evolution of the disturbances in a hypersonic shock layer on a flat plate streamlined by a flow of the mixture of vibrationally excited gases are presented. The experimental study was conducted in the hot-shot high-enthalpy wind tun...
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| Veröffentlicht in: | Thermophysics and aeromechanics 2017-05, Vol.24 (3), p.421-430 |
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| container_title | Thermophysics and aeromechanics |
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| creator | Kirilovskiy, S. V. Poplavskaya, T. V. Tsyryulnikov, I. S. Maslov, A. A. |
| description | The results of the numerical and experimental investigations of the evolution of the disturbances in a hypersonic shock layer on a flat plate streamlined by a flow of the mixture of vibrationally excited gases are presented. The experimental study was conducted in the hot-shot high-enthalpy wind tunnel IT-302 of the ITAM SB RAS. The numerical simulation was carried out with the aid of the ANSYS Fluent package using the solution of the unsteady two-dimensional Navier−Stokes equations with the incorporation of the user-created modules and enabling the consideration of the vibrational non-equilibrium of the carbon dioxide molecules within the framework of the model of the two-temperature aerodynamics. It was obtained that an increase in the carbon dioxide concentration in the mixture with air leads to a reduction of the intensity of pressure disturbances on the surface. The efficiency (up to 20 %) of the method of sound absorbing coatings in the vibrationally excited flows of the mixture of the carbon dioxide and air has been shown. |
| doi_str_mv | 10.1134/S0869864317030106 |
| format | Article |
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It was obtained that an increase in the carbon dioxide concentration in the mixture with air leads to a reduction of the intensity of pressure disturbances on the surface. 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The numerical simulation was carried out with the aid of the ANSYS Fluent package using the solution of the unsteady two-dimensional Navier−Stokes equations with the incorporation of the user-created modules and enabling the consideration of the vibrational non-equilibrium of the carbon dioxide molecules within the framework of the model of the two-temperature aerodynamics. It was obtained that an increase in the carbon dioxide concentration in the mixture with air leads to a reduction of the intensity of pressure disturbances on the surface. The efficiency (up to 20 %) of the method of sound absorbing coatings in the vibrationally excited flows of the mixture of the carbon dioxide and air has been shown.</description><subject>Aerodynamics</subject><subject>CAD</subject><subject>Carbon dioxide</subject><subject>Carbon dioxide concentration</subject><subject>Computational fluid dynamics</subject><subject>Computer aided design</subject><subject>Computer simulation</subject><subject>Disturbances</subject><subject>Evolution</subject><subject>Fluid flow</subject><subject>High enthalpy wind tunnels</subject><subject>Hypersonic shock</subject><subject>Mathematical models</subject><subject>Modules</subject><subject>Navier-Stokes equations</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Thermodynamics</subject><issn>0869-8643</issn><issn>1531-8699</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhoMoWLQ_wFvA82pms8lujlLqBxQ8qOclm03aremmJtna_nuzVEEQ5zDDzDzvyzAIXQG5AaDF7QupuKh4QaEklADhJ2gCjEKWxuIUTcZ1Nu7P0TSENUlBocgpmaA43zk7xM712BncdiEOvpG90gF3PY4rjcPKqXds5UF7nCiJjZURb1PSP4ix7nOUS7zp9slAj82ua7wcjaW1B6z3qou6xUsZdLhEZ0baoKff9QK93c9fZ4_Z4vnhaXa3yBQFHrNWcEGkLDVholCM0KZhvOGFKgSkMeOqalkrKgOGy8Y0UApWKVoIxQxtK0Mv0PXRd-vdx6BDrNdu8OmgUIPIOZQ0B5IoOFLKuxC8NvXWdxvpDzWQevxv_ee_SZMfNSGx_VL7X87_ir4ALxV89A</recordid><startdate>20170501</startdate><enddate>20170501</enddate><creator>Kirilovskiy, S. 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Aeromech</stitle><date>2017-05-01</date><risdate>2017</risdate><volume>24</volume><issue>3</issue><spage>421</spage><epage>430</epage><pages>421-430</pages><issn>0869-8643</issn><eissn>1531-8699</eissn><abstract>The results of the numerical and experimental investigations of the evolution of the disturbances in a hypersonic shock layer on a flat plate streamlined by a flow of the mixture of vibrationally excited gases are presented. The experimental study was conducted in the hot-shot high-enthalpy wind tunnel IT-302 of the ITAM SB RAS. The numerical simulation was carried out with the aid of the ANSYS Fluent package using the solution of the unsteady two-dimensional Navier−Stokes equations with the incorporation of the user-created modules and enabling the consideration of the vibrational non-equilibrium of the carbon dioxide molecules within the framework of the model of the two-temperature aerodynamics. It was obtained that an increase in the carbon dioxide concentration in the mixture with air leads to a reduction of the intensity of pressure disturbances on the surface. The efficiency (up to 20 %) of the method of sound absorbing coatings in the vibrationally excited flows of the mixture of the carbon dioxide and air has been shown.</abstract><cop>Novosibirsk</cop><pub>Kutateladze Institute of Thermophysics SB RAS</pub><doi>10.1134/S0869864317030106</doi><tpages>10</tpages></addata></record> |
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| ispartof | Thermophysics and aeromechanics, 2017-05, Vol.24 (3), p.421-430 |
| issn | 0869-8643 1531-8699 |
| language | eng |
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| subjects | Aerodynamics CAD Carbon dioxide Carbon dioxide concentration Computational fluid dynamics Computer aided design Computer simulation Disturbances Evolution Fluid flow High enthalpy wind tunnels Hypersonic shock Mathematical models Modules Navier-Stokes equations Physics Physics and Astronomy Thermodynamics |
| title | Evolution of disturbances in the shock layer on a flat plate in the flow of a mixture of vibrationally excited gases |
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