Effect of Reynolds Number on the Non-reacting Turbulent Flow Structures of a Double Swirler Burner

Sellan, Dhanalakshmi and Murugan, Raju and Balusamy, Saravanan (2021) Effect of Reynolds Number on the Non-reacting Turbulent Flow Structures of a Double Swirler Burner. Lecture Notes in Mechanical Engineering. pp. 375-382. ISSN 2195-4356

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A deeper understanding of the effect of the swirl flow mechanism in gas turbine combustion is essential to design optimized combustors under various operating conditions. The double swirl flow arrangement has an advantage over the single swirl flow by proving better mixing and flame anchoring due to the increased shear action between the two swirl flows. The non-reacting flow characteristics of the unconfined double swirler burner are studied for various Reynolds numbers. 2D particle image velocimetry (PIV) technique with proper spatial calibration was used to carry out the experiments, and the velocity field is calculated using Insight4G software (TSI). The velocity field and the turbulence parameters such as Reynolds stress and turbulent intensity under different Reynolds numbers are analyzed, which helps to enhance our understanding of the turbulence mixing. The results show that the increase in outer swirl Reynolds number increases the radial component of the velocity; therefore, the swirl flow spread in the radial direction is increasing. Similarly, the outer swirl Reynolds number affects the turbulent parameters such as Reynolds stress and turbulence intensity. Because of this phenomenon, the spread of the flame front may occur and further to the local quenching in the worst case.

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IITH Creators:
IITH CreatorsORCiD
Sellan, DhanalakshmiUNSPECIFIED
Balusamy, SaravananUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Double swirler burner; Particle image velocimetry; Reynolds number; Reynolds stress; Turbulent intensity
Subjects: Physics > Mechanical and aerospace
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 09 Aug 2021 04:17
Last Modified: 09 Aug 2021 04:17
URI: http://raiith.iith.ac.in/id/eprint/8730
Publisher URL: http://doi.org/10.1007/978-981-15-5183-3_40
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