Rana, R and Kumar, S and Muthuveerappan, N (2019) RANS Based Iso-thermal CFD Analysis of the flow field created by a radial swirler in a conical nozzle. In: ASME 2019 Gas Turbine India Conference, GTINDIA 2019, 5 - 6 December 2019, Chennai, Tamil Nadu.
Full text not available from this repository.Abstract
Improvement of specific fuel consumption and specific thrust of gas turbine engines have necessitated to have better combustion performances requirements in terms of combustion efficiency, flame stability, better ignition characteristics, lower emissions etc. Injector designs play a very pivotal role to meet the above requirements. In this paper steady state flow field studies have been carried out in a conical nozzle fitted with single swirler which is the fundamental part of a typical injector. The aspects of the flow field both inside and outside the injector have been captured by using RANS based calculations of commercial software Ansys Fluent. The computational domain extends from 500mm in the upstream direction and the exit flow of the nozzle is allowed to meet on to a domain of length more than 2000mm. The downstream domain is so chosen that the impact of the wall on to the evaluation of the flow field is found to be negligible resembling the flow field studies in open atmosphere. Realizable k-ε turbulent model and standard wall function were used with wall y+ extended from 30 onwards. The study shows a distinct feature of maximum flow velocity at the exit of the injector lip apart from the presence of regular re-circulation bubble at the exit of the injector.
| Item Type: | Conference Paper |
|---|---|
| Publication: | ASME 2019 Gas Turbine India Conference, GTINDIA 2019 |
| Publisher: | American Society of Mechanical Engineers (ASME) |
| Additional Information: | The copyright for this article belongs to American Society of Mechanical Engineers (ASME). |
| Keywords: | Flow fields; Flow velocity; Fuel additives; Fuel consumption; Gas emissions; Gas turbines; Hybrid materials; Ignition; Manufacture; Navier Stokes equations; Nozzle design; Rocket nozzles; Wall function, Combustion efficiencies; Combustion performance; Computational domains; Ignition characteristics; K-epsilon turbulent model; Maximum flow velocities; Specific fuel consumption; Steady-state flow field, Computational fluid dynamics |
| Department/Centre: | Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 04 Dec 2022 05:11 |
| Last Modified: | 04 Dec 2022 05:11 |
| URI: | https://eprints.iisc.ac.in/id/eprint/78190 |
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