Effects of Fueling Scheme on the Performance of a Trapped Vortex Combustor Rig

Liu, Yuying; Li, Ruiming; He-xia, Liu; Yang, Maolin

doi:10.2514/6.2009-4831

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…This entails resolving larger turbulent scales than grid spacing while subgrid scales and their impacts on larger grid scales are modeled, enabling the flow physics of transient phenomena such as shockshock and shock-to-boundary layer and turbulence chemistry interactions to be captured. For locking the flame inside the cavity, enhancing fuel-air mixing, and hence improving combustor performance characteristics, the location of the direct fuel injection into the cavity demonstrated superior performance on the back wall of the cavity as compared to the front wall and farther away from the mainstream combustor inlet [33]. The PISO algorithm was used for pressure-velocity coupling [4,34], and governing equations were discretized by using the Quadratic Upstream Interpolation for Convective Kinematics (QUICK) scheme [25,35], whereas the pressure terms were discretized by using the Pressure-Staggering Option (PRESTO) Scheme [35].…”

Section: Solution Procudurementioning

confidence: 99%

Mixing Enhancement Study in Axisymmetric Trapped-Vortex Combustor for Propane, Ammonia and Hydrogen

Uluk,

Dakka,

Singh

2024

Modelling

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The trapped-vortex combustor (TVC) is an alternative combustor design to conventional aeroengine combustors. The separate fuel and air injection of this combustor and its compact design make it a perfect candidate for conventional fuel usage. Moreover, the performance of a trapped-vortex combustor with alternative fuels such as ammonia and hydrogen in the actual operating conditions of an aeroengine is not well understood. The present paper focused on the performance evaluation of TVCs with the futuristic fuels ammonia and hydrogen including under the realistic operating conditions of a combustor. The investigated fuels were injected into a cavity with 0-,15-, 30- and 45-degree transverse-angled air injectors to evaluate the mixing enhancement of the air and fuel under idle and low-power conditions. The mixing behavior of hydrogen showed a significant difference from the conventional fuel, i.e., propane. It was also noticed that the transverse injection of the air helped to improve the mixing efficiency as compared to the normal injection configuration. Mixing efficiency was higher for the 30- and 45-degree transverse-angled air injectors compared to the 0- and 15-degree transverse-angled air injectors.

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Section: Solution Procudurementioning

confidence: 99%

Mixing Enhancement Study in Axisymmetric Trapped-Vortex Combustor for Propane, Ammonia and Hydrogen

Uluk,

Dakka,

Singh

2024

Modelling

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“…We started the combustor design since 2006 [8][9][10][11][12]. Most of previous work dealt only with trapped vortex combustor (TVC for short), which is generally based on independent cavity and mainstream air flow.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Airflow Distribution for a Novel Combustor Mode

Zhao

Xing

2013

AMM

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This paper investigated the airflow distribution performance of the combustor which utilized trapped vortex in the cavity to improve the flame stability. Hole-filling method was used to study trapped vortex combustor airflow distribution at normal temperature and pressure condition. The influence of inlet velocity and mainstream flow-passage height were investigated. The results show that, inlet velocity hardly impacts the airflow distribution of trapped vortex combustor, but chamber height is a key parameter for airflow distribution. The size, number and opening area of the holes in trapped vortex combustor are important to airflow distribution, and increasing cavity back body air flow could bring well lean blowout limit. The research results may serve as a useful reference in further development and engineering application of trapped vortex combustor.

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“…TVC for ramjet applications has also received many attentions from researchers around of the world. Li et al [37] experimentally investigated an axisymmetric ramjet combustor with a cavity flame holder as illustrated in Fig. 1-18.…”

Section: Some Other Significant Tvc Developmentsmentioning

confidence: 99%

Numerical study of trapped vortex combustors characteristics in small ramjets

Chen¹

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my current supervisor, who continuously provides me valuable suggestions and discussions during these years in many ways. I am also grateful to Dr. Simon Ching-Man Yu of Singapore Institute of Technology, my co-supervisor, for continuously providing me encouragement, guidance, discussions and caring in both research and personal life. Without their guidance, the research would not have been so enriching and fulfilling.

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Effects of Fueling Scheme on the Performance of a Trapped Vortex Combustor Rig

Cited by 8 publications

References 5 publications

Mixing Enhancement Study in Axisymmetric Trapped-Vortex Combustor for Propane, Ammonia and Hydrogen

Mixing Enhancement Study in Axisymmetric Trapped-Vortex Combustor for Propane, Ammonia and Hydrogen

Experimental Investigation of Airflow Distribution for a Novel Combustor Mode

Numerical study of trapped vortex combustors characteristics in small ramjets

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