Numerical study of stability for a laminar conical flame as a function of thermal state of the nozzle wall
D.A. Slastnaya, M.Yu. Khrebtov
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: laminar conical flame, direct numerical simulation, detailed chemical-kinetic mechanism, heat transfer problem, laminarSMOKE, OpenFOAM
Abstract
The paper presents the direct numerical simulation for a laminar flame of a premixed methane-air mixture using a detailed kinetic mechanism. During this study, the numerical module laminarSMOKE is supplemented by a problem of conjugated heat transfer between the flame and nozzle walls. A change in the isothermal boundary condition on the nozzle wall influencing the conjugated heat transfer condition results in a higher temperature of the temperature of the nozzle front edge, reduction in the flow density gradient near the nozzle boundary and a reduction in the low-frequency oscillation of flame caused by the buoyancy effect.
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