Numerical Investigation Into the Effect of Air Swirl on Non-Premixed Combustion

B, Anuj and Nayak, G Mahesh and B, Yogesh and Balusamy, Saravanan (2021) Numerical Investigation Into the Effect of Air Swirl on Non-Premixed Combustion. In: ASME 2021 Gas Turbine India Conference, GTINDIA 2021, 2 December 2021through 3 December 2021, Virtual, Online.

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Abstract

Endeavour is made to investigate the effect of swirled air on methane-air combustion in a Harwell combustor geometry. The inlet air swirl intensity on combustion characteristics such as temperature, pollutant formation, and flow dynamics is studied. The modeling of turbulent characteristics is performed with the standard Ke model using ANSYS Fluent. Eddy dissipation model with one step reaction is used for modeling chemical reaction and P-I radiation model for radiation heat transfer. The swirl number is achieved in the range of 0.0 to 0.6, by varying the tangential velocity to the air inlet. With the increase in swirl intensity, the maximum flame temperature drops, and most of the flame formation shifts towards the inlet of the furnace. The change in the flow field is aided by the formation of recirculating bubbles. The swirl causes the flame to spread radially away from the axis, thereby increasing the heat transfer flux to the furnace wall. As a result, a significant reduction in the formation of NO pollutants is observed. © 2021 by ASME.

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IITH Creators:

IITH Creators	ORCiD
Balusamy, Saravanan	https://orcid.org/0000-0002-3418-4915

Item Type:

Conference or Workshop Item (Paper)

Uncontrolled Keywords:

Combustion characteristics; Combustor geometry; Flow dynamics; Formation dynamics; Inlet air; K-e models; Methane-air combustion; Pollutant formation; Swirl intensity; Turbulent characteristics

Subjects:

Physics > Mechanical and aerospace

Divisions:

Department of Mechanical & Aerospace Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

10 Sep 2022 10:42

Last Modified:

10 Sep 2022 10:42

URI:

http://raiithold.iith.ac.in/id/eprint/10528