Reaction and diffusion in turbulent combustion. Progress report

Technical Report · Wed Oct 02 00:00:00 EDT 1991

DOI:https://doi.org/10.2172/10117797· OSTI ID:10117797

Pope, S B

The primary objective of the research is to use Direct Numerical Simulations (DNS) to study turbulent non-premixed combustion. In DNS, the fluid mechanical and thermochemical conservation equations are solved by an accurate numerical method, without any averaging or turbulence modeling. In principle, then, DNS could be used to study a turbulent diffusion flame, for example. In practice, however, computational limitations severely restrict the flows that can be simulated. For non-reacting flows, DNS is restricted to simple geometries and moderate Reynolds number. For reacting flows there are severe restrictions on the thermochemistry. Our approach is to use DNS to study very simple turbulent reactive flows, that contain qualitatively the same phenomena real flames. Based on the insights and information gained, statistical models will be developed and tested. These models are then applicable to the turbulent flames of practical importance.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-90ER14128
• OSTI ID: 10117797
• Report Number(s): DOE/ER/14128-1; ON: DE92006684
• Resource Relation: Other Information: PBD: 2 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMBUSTION
COMPUTERIZED SIMULATION
PROGRESS REPORT
FLAMES
CHEMICAL REACTION KINETICS
TURBULENT FLOW
THERMOCHEMICAL PROCESSES
NUMERICAL SOLUTION
ALGORITHMS
REYNOLDS NUMBER
400800
990200
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY
MATHEMATICS AND COMPUTERS