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 SIGMA 8 (2012), 073, 10 pages       arXiv:1210.4254      
https://doi.org/10.3842/SIGMA.2012.073 
Contribution to the Special Issue “Geometrical Methods in Mathematical Physics” 
Application of the B-Determining Equations Method to One Problem of Free Turbulence
Oleg V. Kaptsov and Alexey V. Schmidt
 Institute of Computational Modeling SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
 
 
Received May 17, 2012, in final form October 04, 2012; Published online October 16, 2012 
Abstract
 
A three-dimensional model of the far turbulent wake behind a self-propelled body in a passively stratified medium is considered. The model is reduced to a system of ordinary differential equations by a similarity reduction and the B-determining equations method. The system of ordinary differential equations satisfying natural boundary conditions is solved numerically. The solutions obtained here are in close agreement with experimental data.
  
 Key words:
turbulence; far turbulent wake; B-determining equations method. 
pdf (485 kb)  
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References
 
- Andreev V.K., Kaptsov O.V., Pukhnachov V.V., Rodionov A.A., Applications of
  group theoretical methods in hydrodynamics, Mathematics and its
  Applications, Vol. 450, Kluwer Academic Publishers, Dordrecht, 1998.
 
- Barenblatt G.I., Galerkina N.L., Luneva M.V., Evolution of a turbulent burst,
  J. Eng. Phys. Thermophys. 53 (1987), 1246-1252.
 
- Cazalbou J.B., Spalart P.R., Bradshaw P., On the behavior of two-equation
  models at the edge of a turbulent region, Phys. Fluids 6
  (1994), 1797-1804.
 
- Chashechkin Yu.D., Chernykh G.G., Voropaeva O.F., The propagation of a passive
  admixture from a local instantaneous source in a turbulent mixing zone,
  Int. J. Comp. Fluid Dyn. 19 (2005), 517-529.
 
- Chernykh G.G., Fedorova N.N., Moshkin N.P., Numerical simulation of turbulent
  wakes, Russian J. Theor. Appl. Mech. 2 (1992), 295-304.
 
- Chernykh G.G., Fomina A.V., Moshkin N.P., Numerical models for turbulent wake
  dynamics behind a towed body in a linearly stratified medium,
  Russian J. Numer. Anal. Math. Modelling 21 (2006),
  395-424.
 
- Efremov I.A., Kaptsov O.V., Chernykh G.G., Self-similar solutions of two
  problems of free turbulence, Mat. Model. 21 (2009),
  137-144 (in Russian).
 
- Gibson M.M., Launder B.E., On the calculation of horizontal, turbulent, free
  shear flows under gravitational influence, J. Heat Transfer
  98 (1976), 81-87.
 
- Hassid S., Collapse of turbulent wakes in stable stratified media,
  J. Hydronautics 14 (1980), 25-32.
 
- Hinze J.O., Turbulence: an introduction to its mechanism and theory,
  McGraw-Hill Series in Mechanical Engineering, McGraw-Hill Book Co., Inc., New
  York, 1959.
 
- Hulshof J., Self-similar solutions of Barenblatt's model for turbulence,
  SIAM J. Math. Anal. 28 (1997), 33-48.
 
- Kaptsov O.V., B-determining equations: applications to nonlinear partial
  differential equations, European J. Appl. Math. 6 (1995),
  265-286.
 
- Kaptsov O.V., Efremov I.A., Invariant properties of the far turbulent wake
  model, Comput. Technol. 10 (2005), no. 6, 45-51 (in
  Russian).
 
- Kaptsov O.V., Efremov I.A., Schmidt A.V., Self-similar solutions of the
  second-order model of the far turbulent wake, J. Appl. Mech. Tech.
  Phys. 49 (2008), 217-221.
 
- Kaptsov O.V., Shan'ko Yu.V., Family of self-similar solutions of one model of
  the far turbulent wake, in Proceedinds of International Conference
  "Computational and Information Technologies in Sciences, Engineering, and
  Education" (September 20-22, 2006, Pavlodar, Kazakhstan), Vol. 1, TOO NPF
  "EKO", Pavlodar, 2004, 576-579 (in Russian).
 
- Launder B.E., Spalding D.B., Mathematical models of turbulence, Academic Press,
  London, 1972.
 
- Lin J.T., Pao Y.H., Wakes in stratified fluids, Ann. Rev. Fluid Mech.
  11 (1979), 317-338.
 
- Olver P.J., Applications of Lie groups to differential equations,
  Graduate Texts in Mathematics, Vol. 107, Springer-Verlag, New York,
  1986.
 
- Ovsiannikov L.V., Group analysis of differential equations, Academic Press
  Inc., New York, 1982.
 
- Pope S.B., Turbulent flows, Cambridge University Press, Cambridge, 2000.
 
- Rodi W., Examples of calculation methods for flow and mixing in stratified
  fluids, J. Geophys. Res. 92 (1987), 5305-5328.
 
- Schlichting H., Boundary layer theory, McGraw-Hill, New York, 1955.
 
- Vasiliev O.F., Kuznetsov B.G., Lytkin Yu.M., Cherhykh G.G., Development of the
  turbulized fluid region in a stratified medium, Fluid Dyn.  (1974),
  no. 3, 45-52 (in Russian).
 
- Voropaeva O.F., Far momentumless turbulent wake in a passively stratified
  medium, Comput. Technol. 8 (2003), no. 3, 32-46 (in
  Russian).
 
- Voropaeva O.F., Chernykh G.G., On numerical simulation of the dynamics of the
  turbulized fluid regions in stratified medium, Comput. Technol.
  1 (1992), no. 1, 93-104 (in Russian).
 
- Voropaeva O.F., Moshkin N.P., Chernykh G.G., Internal waves generated by
  turbulent wakes in a stably stratified medium, Dokl. Phys.
  48 (2003), 517-521.
 
- Wilcox D.C., Turbulence modeling for CFD, DCW Industries, Canada, 1994.
 
 
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