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Record Details

Record 51 of 8180
Numerical Study of Buoyancy and Differential Diffusion Effects on the Structure and Dynamics of Triple Flames
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Author and Affiliation:
Chen, J. -Y.(California Univ., Berkeley, CA United States)
Echekki, T.(Sandia National Labs., Combustion research Facility, Livermore, CA United States)
Abstract: Triple flames arise in a number of practical configurations where fuel and oxidizer are partially premixed, such as in the base of a lifted jet flame. Past experimental studies, theoretical analyses, and numerical modeling of triple flames suggested the potential role of triple flames in stabilizing turbulent flames and in promoting flame propagation. From recent numerical simulations of laminar triple flames, a strong influence of differential diffusion among species and heat on the triple flame structure has been gradually appreciated. This paper reports preliminary numerical results on the influence of gravity and differential diffusion effects on the structure and dynamics of triple flames with a one-step global irreversible chemistry model.
Publication Date: May 01, 1999
Document ID:
19990054063
(Acquired Aug 06, 1999)
Subject Category: INORGANIC AND PHYSICAL CHEMISTRY
Document Type: Conference Paper
Publication Information: Fifth International Microgravity Combustion Workshop; 427-430; (NASA/CP-1999-208917); (SEE 19990053965)
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH United States
Organization Source: California Univ.; Berkeley, CA United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: MATHEMATICAL MODELS; DIRECT NUMERICAL SIMULATION; BUOYANCY; TURBULENT FLAMES; LAMINAR FLOW; GASEOUS DIFFUSION; FUEL COMBUSTION; FLAME PROPAGATION; GRAVITATIONAL EFFECTS; STABILIZATION; OXIDIZERS; PREMIXING
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