Terascale High-Fidelity Simulations of Turbulent Combustion with Detailed Chemistry
The TSTC project is a multi-university collaborative effort to develop a high-fidelity turbulent reacting flow simulation capability utilizing terascale, massively parallel computer technology. The main paradigm of our approach is direct numerical simulation (DNS) featuring highest temporal and spatial accuracy, allowing quantitative observations of the fine-scale physics found in turbulent reacting flows as well as providing a useful tool for development of sub-models needed in device-level simulations. The code named S3D, developed and shared with Chen and coworkers at Sandia National Laboratories, has been enhanced with new numerical algorithms and physical models to provide predictive capabilities for spray dynamics, combustion, and pollutant formation processes in turbulent combustion. Major accomplishments include improved characteristic boundary conditions, fundamental studies of auto-ignition in turbulent stratified reactant mixtures, flame-wall interaction, and turbulent flame extinction by water spray. The overarching scientific issue in our recent investigations is to characterize criticality phenomena (ignition/extinction) in turbulent combustion, thereby developing unified criteria to identify ignition and extinction conditions. The computational development under TSTC has enabled the recent large-scale 3D turbulent combustion simulations conducted at Sandia National Laboratories.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States); University of Maryland, College Park, MD; University of Wisconsin, Madison, WI
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- FG02-01ER15229
- OSTI ID:
- 946730
- Report Number(s):
- DOE/ER/15229-1; FG02-01ER15227 / FG02-01ER15234; TRN: US201004%%399
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACCURACY
ALGORITHMS
BOUNDARY CONDITIONS
CHEMISTRY
COMBUSTION
COMPUTERS
CRITICALITY
FLAME EXTINCTION
IGNITION
MIXTURES
PHYSICS
POLLUTANTS
SANDIA NATIONAL LABORATORIES
SIMULATION
WATER
combustion
high-performance computing
turbulence
pollutant formation
radiative heat transfer