Combustion Air Jet Influence on Primary Zone Characteristics for Gas-Turbine Combustors

Gogineni, Sivaram; Shouse, Dale T.; Frayne, Charles W.; Stutrud, J.; Sturgess, G. J.

doi:10.2514/2.5949

Cited by 14 publications

(1 citation statement)

References 4 publications

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“…Gogineni studied the effect of the primary holes on the characteristics of the primary zone. It was found that not only the pollutant was effectively reduced but also the flame length was shortened and the lean blowout performance was improved, as the axial positions of primary holes were at the half height of the combustor and the layout was updown symmetrical [31]. Elkady et al used a PIV system to study the effect of the axial position of the primary holes and the flow rate variation on the flow field structure and shape and size of the recirculation zone, and the mechanism that affects the combustor pollutant emission was elucidated [32].…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristics of a Rich-Quench-Lean Combustor-Combined Low-Emission and High-Temperature Rise Combustion

Chen

et al. 2019

International Journal of Aerospace Engineering

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To determine the flow field structure and flow characteristics of a rich-quench-lean (RQL) combustor-combined low-emission and high-temperature rise combustion, a two-dimensional PIV technology was used to evaluate the effect of aerodynamic and structural parameters on the flow field and flow characteristics of the combustor. The variation in the total pressure loss of the combustor has little effect on the flow field structure of the combustor. However, the variation in the parameters of primary holes significantly affects the structure of the central recirculation zone, the distribution of local recirculation zones in the rich-burn zone and quenching zone, and the average residence time in the quenching zone. On the plane that passes through the center of the primary hole, the variations in the array mode and diameter of primary holes would form entrainment vortexes with different characteristics, thus affecting the position and flow state of local recirculation in the rich-burn zone and the local structure of the central recirculation zone. As the rotational direction of local recirculation coincides with that of the main air flow in the primary zone, the local center recirculation is intensified. In contrast, it is weakened. As the primary holes are located at half height (H/2) of the combustor, the residence time of air flow at the quenching zone can be shortened by 65% through using the staggered structure of primary holes and increasing the momentum of the partial single-hole jet. The quick-mixing process in the quenching zone is not beneficial to increase the number of primary holes and decrease the momentum of the single-hole jet.

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Section: Introductionmentioning

confidence: 99%

Flow Characteristics of a Rich-Quench-Lean Combustor-Combined Low-Emission and High-Temperature Rise Combustion

Chen

et al. 2019

International Journal of Aerospace Engineering

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Simulation investigation on flow and combustion characteristics in a high temperature rise combustor based on RQL under different primary holes spacing

Chen

et al. 2021

J Braz. Soc. Mech. Sci. Eng.

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Simulation study on the flow characteristic and combustion performance in a high-temperature rise combustor based on RQL under different length of quench zone

Chen,

Dong,

Xue

2024

J Braz. Soc. Mech. Sci. Eng.

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Combustion Air Jet Influence on Primary Zone Characteristics for Gas-Turbine Combustors

Cited by 14 publications

References 4 publications

Flow Characteristics of a Rich-Quench-Lean Combustor-Combined Low-Emission and High-Temperature Rise Combustion

Flow Characteristics of a Rich-Quench-Lean Combustor-Combined Low-Emission and High-Temperature Rise Combustion

Simulation investigation on flow and combustion characteristics in a high temperature rise combustor based on RQL under different primary holes spacing

Simulation study on the flow characteristic and combustion performance in a high-temperature rise combustor based on RQL under different length of quench zone

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