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Determination of the catalytic activity of materials by solving the equations of a nonequilibrium multicomponent boundary layer on a flat plate

  • S. V. Peigin
  • V. Yu. Kazakov
Article

Abstract

A method is presented for determining the dependence of the probability of heterogeneous recombination γw from results of measurements of the heat flux Qw to the surface of a catalytic sensor exposed to a pulsed supersonic flow of gas dissociated by an incident shock wave propagating in a shock tube. It is shown that the accuracy of the determination of γw depends not only on the accuracy of the measurements in the experiment, but also on the results of mathematical modeling of the flow of the dissociated gas over the surface of the body. Results from an analysis of an experiment are presented.

Keywords

Heat Flux Shock Tube Incident Shock Wave Heterogeneous Catalytic Reaction Multicomponent Diffusion 
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References

  1. 1.
    S. V. Peigin and G. A. Tirskii, “Three-dimensional problems of supersonic and hypersonic flow of a viscous gas around bodies,”Itogi Nauki Tekh., Mekh. Zhidk. Gaza,22, 62–177 (1988).MathSciNetGoogle Scholar
  2. 2.
    R. A. East, R. A. Stalker, and J. P. Baird, “Measurements of heat transfer to a flat plate in a dissociated high-enthalpy laminar air flow,”J. Fluid Mech.,97, No. 4, 673–699 (1980).CrossRefADSGoogle Scholar
  3. 3.
    C. D. Scott, “Catalytic recombination of nitrogen and oxygen on high-temperature reusable surface insulation,” AIAA Paper No. 80-1477 (1980).Google Scholar
  4. 4.
    J. V. Rakich, D. A. Steward, and M. J. Lanfranco, “Results of flight experiment on the catalytic efficiency of Space Shuttle heat shield,” AIAA Paper No. 82-944, New York (1982).Google Scholar
  5. 5.
    R. N. Gupta, J. N. Moss, A. L. Simmonds, and E. V. Zoby, “Space Shuttle heating analysis with variation of attack and catalycity,”J. Spacecraft Rocket,21, No. 2, 217–219 (1984).ADSGoogle Scholar
  6. 6.
    V. L. Kovalev and O. N. Suslov, “Model of the interaction of partially ionized air with a catalytic surface,” in:Studies in Hypersonic Aerodynamics and Heat Transfer with Allowance for Nonequilibrium Chemical Reactions [in Russian], Izd. Mosk. Univ., Moscow (1987), pp. 58–69.Google Scholar
  7. 7.
    E. A. Nasser and R. A. East, “A shock tube investigation of heat transfer from dissociated hydrogen to catalytic surfaces,”Int. J. Heat Mass Transfer,24, No. 4, 515–526 (1980).CrossRefADSGoogle Scholar
  8. 8.
    V. D. Berkut, V. V. Kovtun, N. N. Kudryavtsev, and S. S. Novikov, “Method of determining the probability of heterogeneous recombination of atoms in the interaction of supersonic flows with surfaces,”Khim. Fiz.,4, No. 5, 673–683 (1985).Google Scholar
  9. 9.
    V. D. Berkut, V. V. Kovtun, N. N. Kudryavtsev, et al., “Determination of instantaneous values of the probability of heterogeneous recombination of atoms in a pulsed supersonic flow in a shock tube,”Khim. Fiz.,4, No. 9, 1264–1271 (1985).Google Scholar
  10. 10.
    I. V. Petukhov, “Numerical calculation of two-dimensional flows in a boundary layer,” in:Numerical Methods of Solving Differential and Integral Equations and Quadrature Formulas [in Russian], Nauka, Moscow (1964), pp. 305–325.Google Scholar
  11. 11.
    V. D. Berkut, V. V. Kovtun, N. N. Kudryavtsev, et al., “Probabilities of the heterogeneous recombination of oxygen atoms on surfaces of aluminum oxide, platinum, and silicon monoxide in a pulsed supersonic flow in a shock tube,”Khim. Fiz.,4, No. 10, 1358–1365 (1985).Google Scholar
  12. 12.
    É. A. Gershbein and V. Yu. Kazakov, “Determination of the rate constants of heterogenous catalytic reactions in experimental-theoretical studies of gas flow over a flat surface,”Teplofiz. Vys. Temp.,26, No. 1, 106–114 (1988).Google Scholar
  13. 13.
    C. R. Wilke, “A viscosity equation for gas mixtures,”J. Chem. Phys.,18, No. 4, 517–519 (1959).ADSGoogle Scholar
  14. 14.
    E. A. Mason and S. C. Saxena, “Approximate formula for thermal conductivity,”Phys. Fluids,1, No. 5 (1958).Google Scholar
  15. 15.
    L. V. Gurvich, I. A. Veits, and V. A. Medvedev,Thermodynamic Properties of Individual Substances [in Russian], Book 2, Vol. 1, Nauka, Moscow (1978).Google Scholar
  16. 16.
    É. A. Gershbein, “Laminar multicomponent boundary layer with intense blowing,”Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 1, 64–73 (1970).Google Scholar
  17. 17.
    F. G. Blottner, “Viscous shock layer at the stagnation point with nonequilibrium air chemistry,”AIAA J., No. 12, 2281–2288 (1969).CrossRefADSGoogle Scholar

Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • S. V. Peigin
  • V. Yu. Kazakov

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