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Driving innovations in manufacturing: Open Access research from DMEM

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Design, Manufacture & Engineering Management (DMEM).

Centred on the vision of 'Delivering Total Engineering', DMEM is a centre for excellence in the processes, systems and technologies needed to support and enable engineering from concept to remanufacture. From user-centred design to sustainable design, from manufacturing operations to remanufacturing, from advanced materials research to systems engineering.

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Nonlinear hydrodynamic corrections to supersonic F-KPP wave fronts

Antoine, C. and Dumazer, G. and Nowakowski, B. and Lemarchand, A. (2012) Nonlinear hydrodynamic corrections to supersonic F-KPP wave fronts. Physica D: Nonlinear Phenomena, 241 (5). pp. 461-471. ISSN 0167-2789

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Abstract

We study the hydrodynamic corrections to the dynamics and structure of an exothermic chemical wave front of Fisher–Kolmogorov–Petrovskii–Piskunov (F–KPP) type which travels in a one-dimensional gaseous medium. We show in particular that its long time dynamics, cut-off sensitivity and leading edge behavior are almost entirely controlled by the hydrodynamic front speed correction δUh which characterizes the pushed nature of the front. Reducing the problem to an effective comoving heterogeneous F–KPP equation, we determine two analytical expressions for δUh: an accurate one, derived from a variational method, and an approximate one, from which one can assess the δUh sensitivity to the shear viscosity and heat conductivity of the fluid of interest.