Abstract
The set of smooth equilibrium solutions of a kinetic model for cometary flows is split into equivalence classes according to similarity transformations. For each equivalence class in the two- and three-dimensional cases a normal form is computed. Each such equilibrium solution gives rise to an explicit solution of the compressible Euler equations for monatomic gases. The set of these solutions is discussed with special emphasis on solutions containing vacuum regions.
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Fellner, K., Schmeiser, C. Classification of Equilibrium Solutions of the Cometary Flow Equation and Explicit Solutions of the Euler Equations for Monatomic Ideal Gases. J Stat Phys 129, 493–507 (2007). https://doi.org/10.1007/s10955-007-9396-8
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DOI: https://doi.org/10.1007/s10955-007-9396-8