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A high-order spectral deferred correction strategy for low Mach number flow with complex chemistry
Authors:Will E. Pazner  Andrew Nonaka  John B. Bell  Marcus S. Day  Michael L. Minion
Affiliation:1. Division of Applied Mathematics, Brown University, Providence, USA;2. Center for Computational Sciences and Engineering, Lawrence Berkeley National Laboratory, Berkeley, USA
Abstract:We present a fourth-order finite-volume algorithm in space and time for low Mach number reacting flow with detailed kinetics and transport. Our temporal integration scheme is based on a Multi-Implicit Spectral Deferred Correction (MISDC) strategy that iteratively couples advection, diffusion, and reactions evolving subject to a constraint. Our new approach overcomes a stability limitation of our previous second-order method encountered when trying to incorporate higher-order polynomial representations of the solution in time to increase accuracy. We have developed a new iterative scheme that naturally fits within our MISDC framework and allows us to conserve mass and energy while simultaneously satisfying the equation of state. We analyse the conditions for which the iterative schemes are guaranteed to converge to the fixed point solution. We present numerical examples illustrating the performance of the new method on premixed hydrogen, methane, and dimethyl ether flames.
Keywords:low Mach number combustion  spectral deferred corrections  fourth-order spatiotemporal discretisations  flame simulations  detailed chemistry and kinetics
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