Optimal classification, exact solutions, and wave interactions of Euler system with large friction
Sueet Millon Sahoo, T. Raja Sekhar, G. P. Raja Sekhar
Source abstract
We derive exact solutions of one‐dimensional Euler system that accounts for gravity together with large friction. Certain optimal classes of subalgebra using Lie symmetry analysis are obtained for this system. We apply the reduction procedure to reduce the Euler system to a system of ordinary differential equations in terms of new similarity variable for each class of subalgebras leading to invariant solutions. The evolution of characteristic shock and its interaction with the weak discontinuity by using one of the invariant solutions is studied. Further, the properties of reflected and transmitted waves and jump in acceleration influenced by the incident wave have been characterized.
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