Abstract
Classical non-steady boundary layer equations are fundamental nonlinear partial differential equations in the boundary layer theory of fluid dynamics. In this paper, we introduce various schemes with multiple parameter functions to solve these equations and obtain many families of new explicit exact solutions with multiple parameter functions. Moreover, symmetry transformations are used to simplify our arguments. The technique of moving frame is applied in the three-dimensional case in order to capture the rotational properties of the fluid. In particular, we obtain a family of solutions singular on any moving surface, which may be used to study turbulence. Many other solutions are analytic related to trigonometric and hyperbolic functions, which reflect various wave characteristics of the fluid. Our solutions may also help engineers to develop more effective algorithms to find physical numeric solutions to practical models.
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References
Ibragimov, N. H.: Lie Group Analysis of Differential Equations, Volume 2, CRC Handbook, CRC Press, 1995
Ovsiannikov, L. V.: Group Analysis of Differential Equations, Academic Press, New York, 1982
Garaev, K. G.: Group properties of an equation for nonstationary space boundary layer of incompressible fluid. Trudy Kazan. Aviatsion. Inst., 119, 47–53 (1970)
Vereshchagina, L. I.: Group stratification of space nonstationary boundary layer equations. Vestnik Leningr. Universiteta, 13(3), 82 (1973)
Daragan, M. A., Derbenev, S. A.: Group investigations of laminar boundary layer on rotating wing. Izvestiya Vuzov. Aviatsionaya Tekhnika, 4, 81 (1985)
Derbenev, S. A.: Group properties of boundary layer equations with magnetic field and chemical reactions. Trudy Kazan. Aviatsion. Inst., 119, 100–105 (1970)
Garaev, K. G., Pavlov, Y. G.: Group properties of equations of optimally controlled boundary layer. Izvestiya Vuzov. Aviatsion. Tekhnika, 4, 5 (1970)
Lankerovich, M. Ya.: Group properties of three-dimensional boundary layer equations on arbitrary surfaces. Dinamika Splash. Sredi. Institute of Hydrodynamics, 7, 12 (1971)
Loitsyanskii, L. G.: Laminar Boundary Layer, Fizmatgiz, Moscow, 1962
Xu, X.: Stable-range approach to the equation of nonstationary transonic gas flows. Quart. Appl. Math., 65, 529–547 (2007)
Xu, X.: Asymmetric and moving-frame approaches to Navier-Stokes equations. Quart. Appl. Math., 67, 163–193 (2009)
Abel, M. S., Nandeppanavar, M. M.: Heat transfer in MHD viscoelastic boudary layer flow over a stretching sheet with non-uniform heat source/sink. Commun. Nonl. Sci. Num. Sim., 14, 2120–2131 (2009)
Abdel-Maleck, M. B., Helal, M. M.: Similarity solutions for magneto-forced-unsteady free convective laminar boundary-layer flow. J. Comp. Appl. Math., 218, 202–214 (2008)
Almog, Y.: Thin boundary layer of chiral smectics. Calc. Var., 33, 299–328 (2008)
Bennis, A.-C., Chacón Rebollo, T., Gomez Marmol, M., et al.: Stability of some turbulent vertical models for the ocean mixing boundary layer. App. Math. Lett., 21, 128–133 (2008)
Cheng, J., Liao, S., Mohapatra, R. N., et al.: Series solutions of nano boundary layer flows by means of the homotopy analysis method. J. Math. Anal. Appl., 343, 233–145 (2008)
Cousteix, J., Mauss, J.: Interactive boundary layer models for channel flow. Euro. J. Mech. B/Fluids, 28, 72–87 (2009)
Dennis, D. J., Nickels, T. B.: On the limitation of Taylor’s hypothesis in constructing long structures in a turbulent boundary layer. J. Fluid Mech., 614, 197–206 (2008)
Dixit, S. A., Ramesh, O. N.: Pressure-gradient-dependent logarithmic laws in sink flow turbulent boundary layers. J. Fluid Mech., 615, 445–475 (2008)
Egorov, I. V., Fedorov, A. V., Soudakov, V. G.: Receptivity of a hypersonic boundary layer over a flat plate with a porous coating. J. Fluid Mech., 601, 165–187 (2008)
Ehrenstein, U., Gallaire, F.: Two-dimensional global low-frequency oscillations in a separating boundarylayer flow. J. Fluid Mech., 614, 315–327 (2008)
Ilin, K.: Viscous boundary layers in flows through a domain with permeable boundary. Euro. J. Mech. B/Fluids, 27, 514–538 (2008)
Ishak, A., Naar, R., Pop, I.: MHD boudary-layer flow of a micropolar fluid past a wedge with constant wall heat flux. Commun. Nonl. Sci. Num. Sim., 14, 108–118 (2009)
Ishak, A., Naar, R., Pop, I.: Dual solutions in mixed convection boudary layer flow of micropolar fluids, Commun. Nonl. Sci. Num. Sim., 14, 1324–1333 (2009)
Lan, K. Q., Yang, G. C.: Positive solutions of the Falkner-Skan equation arising in the boundary layer theory. Canad. Math. Bull., 51(3), 386–398 (2008)
Liao, S.-J.: A general approach to get series solution of non-similarity boundary-layer flows. Commun. Nonl. Sci. Num. Sim., 14, 2144–2159 (2009)
Liu, Y., Zaki, T. A., Durbin, P. A.: Boundary-layer transition by interaction of discrete and continuous models. J. Fluid Mech., 604, 199–233 (2008)
Merkin, J. H.: Free convective boundary-layer flow in a heat-generating porous medium: similarity solutions. Quart. Mech. Appl. Math., 61(2), 205–218 (2008)
Naz, R., Mahomed, F. M., Mason, D. P.: Symmetry solutions of a third-order ordinary differential equation which arises from Prandtl boundary layer equations. J. Nonl. Math. Phys., 15,Supplement 1, 179–191 (2008)
Van D’ep, N.: On boundary layer equations for fluids with a moment stress. Prikladn. Matemanka i Mekhnika, 32(4), 748 (1989)
Oron, A., Gottlib, O., Novbari, E.: Weighted-residual integral boundary-layer model of temporally excited falling liquid films. Euro. J. Mech. B/Fluids, 28, 37–60 (2009)
Ruban, A. I., Vonatsos, K. N.: Discontinuous solutions of the boundary-layer equations. J. Fluid Mech., 614, 407–424 (2008)
Sakamoto, K., Akitomo, K.: The tidally induced bottom boundary layer in rotating frame: similarity of turbulence. J. Fluid Mech., 615, 1–15 (2008)
Tsai, J.-C.: Similarity solutions for boundary layer flows with prescribed surface temperature. Appl. Math. Lett., 21, 67–73 (2008)
Turkyilmazoglu, M.: Effects of suction/blowing on the lower branch modes of the incompressible boundary layer flow due to a rotation-disk. Z. Aangew. Math. Phys., 59, 676–701 (2008)
Wells, A. J., Worster, M. G.: A geophysical model of vertical natural convection boundary layers. J. Fluid Mech., 609, 111–137 (2008)
Xu, H., Pop, I.: Homotopy analysis of unsteady boundary-layer flow started impulsively from rest along a symmetric wedge. Z. Aangew. Math. Mech., 88(6), 507–514 (2008)
Yang, G. C.: New results of Falkner-Skan equation arising in boubdary layer theory. Appl. Math. Comp., 202, 406–412 (2008)
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Supported by National Natural Science Foundation of China (Grant No. 10871193)
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Xu, X.P. New algebraic approaches to classical boundary layer problems. Acta. Math. Sin.-English Ser. 27, 1023–1070 (2011). https://doi.org/10.1007/s10114-011-9414-2
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DOI: https://doi.org/10.1007/s10114-011-9414-2
Keywords
- Boundary layer equation
- symmetry transformation
- moving frame
- exponential approach
- trigonometric approach
- hyperbolic approach
- rational approach