Nonlinear acoustoelectrical waves in porous media filled by the electroconducting fluid

The nonlinear acoustoelectric waves in two phase media - solid with pores filled by the electroconducting fluid are investigated. The self according problem when are taken into account interinfluence of all factors accompaining of wave is solved. The equations of media motion are derived by using of the variational principle in Lagrangian coordinates on account variation of porousity and by inclusion of electrical terms. The formulae of nonlinear waves speed and attenuation coefficient are derived. There are considered the onedimensional and threedimensional cases. The nonlinear threedimensional evolutionary and the modulation equations are derived. Their solutions are found and examined in form of soliton-like waves and narrow wave beams.