An experimental and LES comparison of water- and air-based swirling flow test rigs in vertical and horizontal configurations

Vashahi, Foad; Baek, Byung Joon; Lee, Jeekeun

doi:10.1007/s12206-017-0619-x

Cited by 4 publications

(1 citation statement)

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“…The results of iso-surface with zero velocity show that the flow structure is asymmetrically distributed in the entire combustor, and the flow trend on one side of the swirler is relatively high (Vashahi et al 2017a(Vashahi et al , 2017b. LES analysis on a new type of variable vane swirler for gas turbine combustion chamber was performed by Eldrainy et al (Eldrainy et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Isothermal Flow inside a New Combustor with Two-Stage Axial Swirler

Wang

Wei

Shrotriya

et al. 2022

JAFM

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Experiments and numerical simulations are performed to study the cold flow field characteristics in a two-stage axial swirl combustion chamber. Large eddy simulation with dynamic turbulent kinetic energy sub-grid scale model is used to calculate the flow field, and particle image velocimetry is used to measure the turbulent flow field. The calculated results are found to be in a good agreement with the experiment results. Due to the shear layers and the density difference between CO2 and air flows, the central recirculation zone appears. With the increase of the ratio of flow velocity between inner and outer tubes, the central recirculation zone shrinks gradually, while the length and range of the angular recirculation zone increase continuously. The vortex structure develops in the axial and radial directions, and the vortex breakdown mostly occurs in the upstream regions. However, outside the central recirculation zone, only one shear layer is observed, and its vortex structure is almost extended up to the exit of the combustion chamber. In addition, precession vortex core is not seen in all the conditions.

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Section: Introductionmentioning

confidence: 99%