Thermal Pulse Combustion

Richards, George; Morris, Gary J.; Shaw, David W.; Keeley, S. A.; Welter, M. J.

doi:10.1080/00102209308935304

Cited by 56 publications

(41 citation statements)

References 6 publications

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“…Note that the pressure amplitudes increase sharply prior to blow-out, as captured by the WSR model. Figure 12 Pressure amplitudes in a lean premixed combustor near the blow-out conditions [9] The experimental results of Richards et al [3] also agree with the prediction of the WSR model. In that study, the combustor used to investigate the effect of the heat loss, flow rate and friction was composed of a choked inlet, well-mixed combustion zone and a tail pipe.…”

Section: Experimental Evidencesupporting

confidence: 76%

“…p′ was 0.4 Psi in Ref [9] [3] and [10], as shown in Figures 13 to 15, the turbulence intensity is much larger than Ref [9] (One can expect it from the magnitude of the pressure oscillations) and the equivalence ratio is lower. Therefore, it is also reasonable to assume that those systems as WSR near the blow out limit.…”

Section: Experimental Evidencementioning

confidence: 91%

“…Combustion instability has been modeled using a well-stirred reactor and one-step kinetics by Richards et al [3], Janus and Richards [4], Lieuwen et al [5], and Lieuwen and Zinn [6]. Richards et al [3] investigated the effect of heat loss, flow rate and friction in a tailpipe of a pulse combustor.…”

Section: Introductionmentioning

confidence: 99%

“…Richards et al [3] investigated the effect of heat loss, flow rate and friction in a tailpipe of a pulse combustor. The governing flow equations were reduced to a set of ODEs assuming a well-mixed combustion zone and choked inlet flow.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heat release dynamics modeling for combustion instability analysis of kinetically controlled burning

Park

Annaswamy

Ghoniem

2001

39th Aerospace Sciences Meeting and Exhibit

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We present a heat release dynamics model which utilizes a well-stirred reactor (WSR) model and one-step kinetics to describe the unsteady combustion process. The model incorporates the linearized mass and energy equations to describe the response of the reactor to external perturbations, and is cast in the form of a first order filter. The model is able to predict the phase between the mass flow rate oscillations and the resulting heat release fluctuations, as function of the operating conditions, e.g., the mean equivalence ratio and mean mass flow rate. The model predicts a sudden shift in phase in the region between the maximum reaction rate and the blow-out limit. We show that this phase change may trigger combustion instability. We use this novel model to predict combustion instability conditions in high swirl combustion, and demonstrate that these predictions agree qualitatively with experimental studies.2

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Section: Experimental Evidencesupporting

confidence: 76%

Section: Experimental Evidencementioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Heat release dynamics modeling for combustion instability analysis of kinetically controlled burning

Park

Annaswamy

Ghoniem

2001

39th Aerospace Sciences Meeting and Exhibit

View full text Add to dashboard Cite

show abstract

“…Richards et al [3] introduced a mathematical model that describes pulse combustion in a system with a continuous fuel supply, which they call thermal pulse combustion. Figure 1 gives a schematic representation of such a thermal pulse combustor.…”

Section: Thermal Pulse Combustion: a Mathematical Modelmentioning

confidence: 99%