Lie Group Analysis of a Flow with Contaminant-Modified Viscosity
This article is part of Special Issue:
Raseelo J. Moitsheki,
Raseelo J. Moitsheki
Department of Mathematics, Vaal University of Technology, Private bag X021, Vanderbijlpark 1900, South Africa vut.ac.za
Search for more papers by this authorRaseelo J. Moitsheki,
Raseelo J. Moitsheki
Department of Mathematics, Vaal University of Technology, Private bag X021, Vanderbijlpark 1900, South Africa vut.ac.za
Search for more papers by this authorAcademic Editor: Meir Shillor
Abstract
A class of coupled system of diffusion equations is considered. Lie group techniques resulted in a rich array of admitted point symmetries for special cases of the source term. We also employ potential symmetry methods for chosen cases of concentration and a zero source term. Some invariant solutions are constructed using both classical Lie point and potential symmetries.
References
- 1 Basha H. A. and El-Habel F. S., Analytical solution of the one-dimensional time-dependent transport equation, Water Resources Research. (1993) 29, no. 9, 3209–3214, https://doi.org/10.1029/93WR01038.
- 2 Bird R. B., Stewart W. E., and Lightfoot E. N., Transport Phenomena, 1960, John Wiley & Sons, New York, NY, USA.
- 3 Munafò M., Cecchi G., Baiocco F., and Mancini L., River pollution from non-point sources: a new simplified method of assessment, Journal of Environmental Management. (2005) 77, no. 2, 93–98, https://doi.org/10.1016/j.jenvman.2005.02.016.
- 4 Shulka P., Analytical solutions for unsteady transport dispersion of nonconservative pollutant with time-dependent periodic waste discharge concentration, Journal of Hydraulic Engineering. (2002) 128, no. 9, 866–869.
- 5 Taylor G. I., The dispersion of matter in turbulent flow through pipe, Proceedings of the Royal Society of London. (1954) 233, no. 1155, 446–448.
- 6 Zheng C. and Bennet G. D., Applied Contaminant Transport Modeling: Theory and Practice, 1995, Van Nostrand Reinhold, New York, NY, USA.
- 7 Lie S., Über integration durch bestimmte integrals von einer klasse linearer partieller differentialgleichengen, Archivum Mathematicum. (1881) 6, 328–368.
- 8 Bluman G. W. and Anco S. C., Symmetry and Integration Methods for Differential Equations, 2002, 154, Springer, New York, NY, USA, Applied Mathematical Sciences, MR1914342, ZBL1013.34004.
- 9 Bluman G. W. and Kumei S., Symmetries and Differential Equations, 1989, 81, Springer, New York, NY, USA, Applied Mathematical Sciences, MR1006433, ZBL0698.35001.
- 10 N. H. Ibragimov, CRC Handbook of Lie Group Analysis of Differential Equations. Vol. 1: Symmetries, Exact Solutions and Conservation Laws, 1994, CRC Press, Boca Raton, Fla, USA, MR1278257, ZBL0864.35001.
- 11 N. H. Ibragimov, CRC Handbook of Lie Group Analysis of Differential Equations. Vol. 2: Applications in Engineering and Physical Sciences, 1995, CRC Press, Boca Raton, Fla, USA, MR1402244, ZBL0864.35002.
- 12 N. H. Ibragimov, CRC Handbook of Lie Group Analysis of Differential Equations. Vol. 3: New Trends in Theoretical Development and Computational Methods, 1996, CRC Press, Boca Raton, Fla, USA, MR1383090, ZBL0864.35003.
- 13 Olver P. J., Applications of Lie Groups to Differential Equations, 1986, 107, Springer, New York, NY, USA, Graduate Texts in Mathematics, MR836734, ZBL0588.22001.
- 14 Sherring J., DIMSYM symmetry determination and linear differential equation package, Latrobe University, 1993.
- 15 Hearn A. C., REDUCE, Rand Corporation Publication CP78, Santa Monica, Calif, USA, 1985.
- 16 Ovsiannikov L. V., Group relations of the equation of non-linear heat conductivity, Doklady Akademii Nauk SSSR. (1959) 125, 492–495, MR0106351.
- 17 Ivanova N. M. and Sophocleous C., On the group classification of variable-coefficient nonlinear diffusion-convection equations, Journal of Computational and Applied Mathematics. (2006) 197, no. 2, 322–344, https://doi.org/10.1016/j.cam.2005.11.008, MR2260409, ZBL1103.35007.
- 18 Sophocleous C., Symmetries and form-preserving transformations of generalised inhomogeneous nonlinear diffusion equations, Physica A. (2003) 324, no. 3-4, 509–529, MR1982903, ZBL1024.35042.
- 19 Vaneeva O. O., Johnpillai A. G., Popovych R. O., and Sophocleous C., Enhanced group analysis and conservation laws of variable coefficient reaction-diffusion equations with power nonlinearities, Journal of Mathematical Analysis and Applications. (2007) 330, no. 2, 1363–1386, https://doi.org/10.1016/j.jmaa.2006.08.056.
- 20 Pucci E. and Saccomandi G., Potential symmetries and solutions by reduction of partial differential equations, Journal of Physics A: Mathematical and General. (1993) 26, no. 3, 681–690, https://doi.org/10.1088/0305-4470/26/3/025, MR1210927, ZBL0789.35146.
- 21 Moitsheki R. J., Broadbridge P., and Edwards M. P., Systematic construction of hidden nonlocal symmetries for the inhomogeneous nonlinear diffusion equation, Journal of Physics A: Mathematical and General. (2004) 37, no. 34, 8279–8286, https://doi.org/10.1088/0305-4470/37/34/006, MR2092797, ZBL1064.35009.
- 22 Anco S. C. and Bluman G. W., Direct construction method for conservation laws of partial differential equations—part II: general treatment, European Journal of Applied Mathematics. (2002) 13, no. 5, 567–585, https://doi.org/10.1017/S0956792501004661, MR1939161, ZBL1034.35071.
- 23 Goard J., personal correspondence, 2004.