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Existence of pulsating waves in a model of flames in sprays

Peter Constantin, Komla Domelevo, Jean-Michel Roquejoffre, Lenya Ryzhik (2006)

Journal of the European Mathematical Society

A one-dimensional system describing the propagation of low Mach number flames in sprays is studied. We show that pulsating waves may exist when the droplet distribution in the unburnt region is spatially periodic. The range of possible propagation speeds may be either bounded or unbounded, depending on the threshold temperatures of the burning and vaporization rates.

Existence of quasilinear relaxation shock profiles in systems with characteristic velocities

Guy Métivier, Benjamin Texier, Kevin Zumbrun (2012)

Annales de la faculté des sciences de Toulouse Mathématiques

We revisit the existence problem for shock profiles in quasilinear relaxation systems in the case that the velocity is a characteristic mode, implying that the profile ODE is degenerate. Our result states existence, with sharp rates of decay and distance from the Chapman–Enskog approximation, of small-amplitude quasilinear relaxation shocks. Our method of analysis follows the general approach used by Métivier and Zumbrun in the semilinear case, based on Chapman–Enskog expansion and the macro–micro...

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