Conservation Laws of Multidimensional Diffusion-Convection Equations
Nataliya M. Ivanova
Abstract
All possible linearly independent local conservation laws for n-dimensional diffusion--convection equations ut=(A(u))ii+(Bi(u))i were constructed using the direct method and the composite variational principle. Application of the method of classification of conservation laws with respect to the group of point transformations [R.O. Popovych, N.M. Ivanova, J. Math. Phys., 2005, V.46, 043502 (math-ph/0407008)] allows us to formulate the result in explicit closed form. Action of the symmetry groups on the conservation laws of diffusion equations is investigated and generating sets of conservation laws are constructed.
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