Time integration of reacting flows with CSP tabulation.

Conference · Wed Apr 01 00:00:00 EDT 2009

OSTI ID:952348

Frenklach, Michael ^[1]; Marzouk, Youssef M ^[2]; Valorani, Mauro ^[3]; Goussis, Dimitris A ^[4]; Najm, Habib N; Debusschere, Bert J

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1. University of California at Berkeley, CA
2. Massachusetts Institute of Technology, Cambridge, MA
3. Universita di Roma "La Sapienza," Rome, Italy
4. National Technical University of Athens, Athens, Greece

This paper presents recent progress on the use of Computational Singular Perturbation (CSP) techniques for time integration of stiff chemical systems. The CSP integration approach removes fast time scales from the reaction system, thereby enabling integration with explicit time stepping algorithms. For further efficiency improvements, a tabulation strategy was developed to allow reuse of the relevant CSP quantities. This paper outlines the method and demonstrates its use on the simulation of hydrogen-air ignition.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 952348
• Report Number(s): SAND2009-2012C
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ALGORITHMS
CHEMICAL REACTIONS
COMPUTER CALCULATIONS
HYDROGEN FUELS
IGNITION