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A PREDICTOR-CORRECTOR SPLIT PROJECTION METHOD FOR TURBULENT REACTIVE FLOW

DOI: 10.1615/ICHMT.2012.CHT-12.280
pages 445-470

David Carrington
Los Alamos National Laboratory

Xiuling Wang
Mechanical and Civil Engineering Department, Purdue University Northwest, Hammond, IN, 46323, USA

Darrell W. Pepper
NCACM, Department of Mechanical Engineering, University of Nevada Las Vegas, Las Vegas, NV 89154, USA

Abstract

A Predictor-Corrector Split (PCS) projection method based on a fractional step Finite Element Method (FEM) is used for modeling turbulent combustion. The PCS system advances the accuracy and range of applicability of the KIVA combustion model. The algorithm, combined with KIVA's spray and chemistry models and a moving mesh capability, is being implemented into a new generation of KIVA software, KIVA-hpFE to increase modeling predictability. The FEM formulation uses an h-adaptive procedure to model turbulent reactive flow over a wide range of velocities of various fluids. A k-ω turbulent closure scheme is used in conjunction with the turbulent form of the Navier-Stokes equations. The method is applicable to Newtonian and non-Newtonian flows and engineering problems involving fluid structure interactions, porous media, and solidification. The model is designed to produce a minimal amount of computational effort when compared to fully resolved grids at comparable accuracy.

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