Lie group analysis of heat and mass transfer effects on steady MHD free convection dissipative fluid flow past an inclined porous surface with heat generation.

*(English)*Zbl 1453.76229Summary: In this paper, an analysis has been carried out to study heat and mass transfer effects on steady two-dimensional flow of an electrically conducting incompressible dissipating fluid past an inclined semi-infinite porous surface with heat generation. A scaling group of transformations is applied to the governing equations. The system remains invariant due to some relations among the parameters of the transformations. After finding three absolute invariants, a third-order ordinary differential equation corresponding to the momentum equation, and two second-order ordinary differential equations corresponding to energy and diffusion equations are derived. The coupled ordinary differential equations along with the boundary conditions are solved numerically. Many results are obtained and a representative set is displayed graphically to illustrate the influence of the various parameters on the dimensionless velocity, temperature and concentration profiles. Comparisons with previously published work are performed and the results are found to bein very good agreement.

##### MSC:

76W05 | Magnetohydrodynamics and electrohydrodynamics |

76M60 | Symmetry analysis, Lie group and Lie algebra methods applied to problems in fluid mechanics |

76R10 | Free convection |

80A19 | Diffusive and convective heat and mass transfer, heat flow |

76S05 | Flows in porous media; filtration; seepage |