Computational Fluid Dynamics (CFD) Based Combustion Modeling

Jayakaran, Jaiwant; Lorra, Michael A.; Smith, Joseph D.; Henneke, Michael

doi:10.1201/9781420038699.ch9

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…The use of FEM in failure analysis is commonplace in the aerospace industry, [6][7][8][9] leading to combustion-driven oscillation of the flame and the subsequent effect on sound levels. 10,11 Computational fluid dynamics (CFD) studies conducted by John Zink Co., a manufacturer of refractory burners, thermal oxidisers and combustion flares, has mainly centred on applications for fired heaters and incinerators, with little consideration for the effect of temperatures on mechanical integrity, and though the authors suggest that the method might be extended to flare systems, 12 no such study has been published. This is the first study to consider the effect of operating temperatures on the mechanical integrity of a flare tip.…”

Section: Introductionmentioning

confidence: 99%

Thermal imaging and stress analysis for predicting the behaviour and long-term performance of flare tips

Abolghasemi

Williamson

Lindley

et al. 2013

The Journal of Strain Analysis for Engineering Design

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A combination of computational and imaging tools was developed to characterise the performance and assess the lifetime of flare tips, the top portion of stacks used to burn off excess gas in the gas and petroleum industry. Integrating the use of (1) an infrared imaging study to obtain temperature profiles of flare tips in operation and (2) finite element modelling of stress distributions based on temperature profiles allowed lifetime prediction for creep and fatigue failure. The techniques were successfully applied to a complex flare tip design that included a venturi shaped windshield. It was concluded that in this instance, the flare tip lifetime would be limited by a combination of creep and fatigue of the support brackets and by plastic deformation at the top of the windshield. Design methodologies for producing flare tips with improved lifetimes are suggested, including the use of computational fluid dynamics modelling to assess the combined effects of gas flow rates and wind conditions on combustion behaviour. Thus, the prediction prior to installation, of both the performance of a new design and the long-term behaviour, can be a valuable assessment process for a proposed flare tip assembly.

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Section: Introductionmentioning

confidence: 99%

Thermal imaging and stress analysis for predicting the behaviour and long-term performance of flare tips

Abolghasemi

Williamson

Lindley

et al. 2013

The Journal of Strain Analysis for Engineering Design

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“…As shown in Section 2.3 reaction sheets for partially premixed flows are most likely present during scramjet combustion processes. Therefore, in this thesis the laminar flame speed is used to calculate the chemical time scale, which is supported by several authors [14,60,61,93,99,177,230]. However, it should be noted that the laminar flame speed looses it's physical meaning in partially-or non-premixed flows.…”

Section: Definition Of Chemical Scalesmentioning

confidence: 82%

The flow physics of inlet-fueled, low-compression scramjets

Gehre¹

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Computational Fluid Dynamics (CFD) Based Combustion Modeling

Cited by 2 publications

References 18 publications

Thermal imaging and stress analysis for predicting the behaviour and long-term performance of flare tips

Thermal imaging and stress analysis for predicting the behaviour and long-term performance of flare tips

The flow physics of inlet-fueled, low-compression scramjets

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