Numerical simulation of laminar reacting flows with complex chemistry

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Combustion Theory and Modelling

OSTI ID:807397

Day, Marcus S ^[1]; Bell, John B

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1. LBNL Library

We present an adaptive algorithm for low Mach number reacting flows with complex chemistry. Our approach uses a form of the low Mach number equations that discretely conserves both mass and energy. The discretization methodology is based on a robust projection formulation that accommodates large density contrasts. The algorithm uses an operator-split treatment of stiff reaction terms and includes effects of differential diffusion. The basic computational approach is embedded in an adaptive projection framework that uses structured hierarchical grids with subcycling in time that preserves the discrete conservation properties of the underlying single-grid algorithm. We present numerical examples illustrating the performance of the method on both premixed and non-premixed flames.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director, Office of Science. Office of Advanced Scientific Computing Research. Mathematical, Information, and Computational Sciences Division (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 807397
• Report Number(s): LBNL--44682
• Journal Information: Combustion Theory and Modelling, Journal Name: Combustion Theory and Modelling Journal Issue: 4 Vol. 4
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
ALGORITHMS
CHEMISTRY
DIFFUSION
FLAMES
LAMINAR DIFFUSION FLAMES UNSTEADY COMBUSTION NUMERICAL MODELLING
MACH NUMBER
PERFORMANCE
SIMULATION