Control of combustion oscillations

I Emiris, JH Whitelaw - Combustion Science and Technology, 2003 - Taylor & Francis
Combinations of small quantities of fuel and imposed oscillations are shown to ameliorate
combustion oscillations in ducted flows of premixed methane and air with equivalence ratios …

Nonlinear dynamics of laboratory combustor pressure oscillations

JD Sterling, EE Zukoski - Combustion science and technology, 1991 - Taylor & Francis
The mechanisms responsible for driving and damping of pressure oscillations in a
laboratory combustor have been investigated. The chamber contains a turbulent …

Nonlinear interactions between forced and self-excited acoustic oscillations in premixed combustor

BD Bellows, A Hreiz, T Lieuwen - Journal of propulsion and power, 2008 - arc.aiaa.org
THIS note describes an investigation of the nonlinear interactions between natural acoustic
modes and forced oscillations in an unstable combustor. Such instabilities are a serious …

Control of oscillations in ducted premixed flames

EW Hendricks, S Sivasegaram, JH Whitelaw - … in Combustors: IUTAM …, 1992 - Springer
The paper presents the results of a study of active control of oscillations with a single
dominant frequency in premixed flames stabilised behind a disk and a rearward-facing step …

Control of combustion oscillations by forced oscillation of part of the fuel supply

S Sivasegaram, RF Tsai… - Combustion science and …, 1995 - Taylor & Francis
Naturally occurring oscillations in ducted premixed flames have been controlled by imposed
oscillation of the fuel. The flames were stabilised behind a bluff-body and a step with …

Feedback control of combustion oscillations

AP Dowling, AS Morgans - Annu. Rev. Fluid Mech., 2005 - annualreviews.org
▪ Abstract Early work and recent advances in feedback control of combustion oscillations are
described. The physics of combustion oscillations, most commonly caused by a coupling …

Combustion of premixed fuel and air downstream of a plane sudden-expansion

L Khezzar, SRN De Zilwa, JH Whitelaw - Experiments in fluids, 1999 - Springer
Experiments have been performed to quantify the isothermal and combusting flows
downstream of a plane sudden-expansion. The detailed measurements correspond to an …

Control of flame oscillations with equivalence ratio modulation

GA Richards, M Janus, EH Robey - Journal of propulsion and power, 1999 - arc.aiaa.org
A novel technique for controlling oscillating combustion is proposed and demonstrated. For
oscillations that exist over a limited range of equivalence ratios, we suggest that periodic …

Active control of unsteady combustion-induced oscillations

A Gulati, R Mani - Journal of Propulsion and Power, 1992 - arc.aiaa.org
MOST aircraft engines, afterburners, and land-based gas and liquid-fired combustors under
some operating conditions exhibit combustion-induced instability of one form or the other …

Control of NOx emissions in confined flames by oscillations

C Poppe, S Sivasegaram, JH Whitelaw - Combustion and Flame, 1998 - Elsevier
The extent to which imposed oscillations were able to reduce emissions of nitrogen oxides
(NOx) has been quantified in ducted, bluff-body stabilized flames and in a sector of a gas …