2015 1(16)

Back to table of content

   Short abstract

 

Pages:

28 - 32

Language:

RU

Ref.:

9


Click to get extended abstract


Download paper: [RU]

2015_1(16)_5.pdf

 

 

CONTROL OF SUPERSONIC BOUNDARY LAYER PARAMETERS BY BLOWING FOREIGN GAS

Gaponov S.A., Smorodskiy B.V.

Khristianovich Institute Of Theoretical And Applied Mechanics SB RAS, Novosibirsk, Russia


Citation:

Gaponov, S.A. and Smorodskiy, B.V., (2015) Control of supersonic boundary layer parameters by blowing foreign gas, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(16), PP. 28 - 32.


Keywords:

boundary layer; heat transfer; stability; binary mixtures; laminar-turbulent transition; compressible gas; gas injection; surface friction


Abstracts:

In this paper the properties of the compressible boundary layer of binary mixtures were studied on the base of binary gas mixtures boundary layer equations in a local self-similar approximation. Velocities, densities and temperatures profiles were calculated at Mach numbers 0.7 and 2. It turned out that the heavy gas blowing action is analogous to the cooling surface and should lead to the boundary layer stability growth and the laminar-turbulent transition delay. It was obtained data on the blowing influence on the surface friction and heat transfer coefficients. It has been shown that the impurities blowing intensity increase leads to the monotonous reduce of surface friction and the heat transfer values on a wall. The light gas is a more efficient cooler of a surface. Data about the behavior of the generalized inflection point depending on the parameters of the injection were calculated. The heavy gas injection shifted the point inflection in the direction of the plate surface, while inflow of light gas influenced on the point inflection position by the reverse way. On this basis it was concluded that a boundary layer stabilization is possible by blowing of the gas with high molecular weight.
This work is the basis for the projected accurate calculations of the linear boundary layer stability of binary gas mixtures.


References:

  1. Volchkov E.P. Concerning the heat and mass transfer features on permeable surfaces // Int.J. Heat and mass transfer. - 2006. - V. 49. - P. 755 - 762.

  2. Voltchkov E.P., Makarov M.S., Makarova S.N. Definition of thermal and diffusive fluxes at the permeable wall with the foreign injection in the boundary layer. // Modern science. - 2011. -N 2. - P. 102-107.

  3. Leontiev A.I., Lushchik V. G, Yakubenko A.E. Compressible Turbulent Boundary Layer on a Permeable Plate with Injection of Foreign Gas // High Temperature. - 2007. - Vol. 45. - N. 4. - P. 488-496.

  4. Leont’ev A.I., Lushchik V.G., Yakubenko A.E. Temperature of a thermally-insulated permeable wall in a compressible flow. // Fluid Dynamics. - 2008. Vol. 43. - N 5. - P 799-806.

  5. Lushchik V. G, and Yakubenko A.E. Friction and Heat Transfer in the Boundary Layer on a Permeable Surface with Injection of Foreign Gas. // High Temperature. - 2005. - Vol. 43. - N. 6. - P. 881-889.

  6. Makarova S.N. Temperature optimization of the permeable wall at an injection of the foreign gas // Thermal processes in engineering. -2012. - N 7. - P. 291-297.

  7. Gaponov S.A., Petrov G.V. Stability of a boundary layer with the nonequilibrium gas dissociation. - Novosibirsk: Science, SB of RAS. 2013. -96 P.

  8. Glumov D.N. , Strekalov A.V. Methods of calculating the dynamic viscosity of gases in a wide range of pressures. Electronic scientific journal "Oil and gas business"", http://www.ogbus.ru. - 2011. - N1. P. 194-209

  9. Seung-Kyo Oh. Modified Lennard-Jones Potentials with a Reduced Temperature-Correction Parameter for Calculating Thermodynamic and Transport Properties: N oble G ases and Their Mixtures (He, Ne, Ar, Kr, and Xe) // Journal of thermodynamics. - 2013. -Vol. 2013. -Article ID 828620. -29P. -http://dx.doi.org/10.1155/2013/828620.

 

 
     

© SPIC "Kappa", LLC 2009-2016