Investigating the dynamics of combustion-driven oscillations leading to lean blowout
| Autor: | Lipika Kabiraj, Sujith R I, Pankaj Wahi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Phase (waves)
General Physics and Astronomy Combustion Dynamical behaviors Blowouts Lean blow out System Dynamics Quasi-periodic Thermoacoustic oscillations Physics::Fluid Dynamics Practical combustion symbols.namesake Equivalence ratios Control theory Acoustic pressures Flame surface Hopf bifurcation Physics::Chemical Physics Sound pressure Combustion instabilities Fluid Flow and Transfer Processes Premixed flame Physics Burst oscillation Oscillation Plasma oscillations Mechanical Engineering Laminar premixed flames Laminar flow Mechanics Control parameters System dynamics symbols |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | The dynamics of combustion-driven thermoacoustic oscillations for a ducted laminar premixed flame has been investigated in lean equivalence ratio conditions. Combustion instability appears in the system as acoustic pressure and flame surface oscillations following a Hopf bifurcation. Further change in the control parameter leads to subsequent bifurcations, causing a rich dynamical behavior such as quasi-periodic and intermittent burst oscillations to appear in the system. During the burst oscillation phase, the system dynamics resembles the flame blowout phenomenon, which is of interest in practical combustion applications. � 2012 The Japan Society of Fluid Mechanics and IOP Publishing Ltd. |
| Databáze: | OpenAIRE |
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