Helical Flow Disturbances in a Multinozzle Combustor | Zendy

Michael Aguilar | Zendy; Michael Malanoski | Zendy; Gautham Adhitya | Zendy; Benjamin Emerson | Zendy; Vishal Acharya | Zendy; David R. Noble | Zendy; Tim Lieuwen | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Helical Flow Disturbances in a Multinozzle Combustor

Author(s) -

Michael Aguilar,

Michael Malanoski,

Gautham Adhitya,

Benjamin Emerson,

Vishal Acharya,

David R. Noble,

Tim Lieuwen

Publication year - 2015

Publication title -

journal of engineering for gas turbines and power

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.567

H-Index - 84

eISSN - 1528-8919

pISSN - 0742-4795

DOI - 10.1115/1.4029696

Subject(s) - nozzle , jet (fluid) , mechanics , combustor , transverse plane , flow (mathematics) , physics , vortex , plane (geometry) , rotational symmetry , amplitude , azimuth , optics , geometry , structural engineering , engineering , combustion , mathematics , chemistry , thermodynamics , organic chemistry

This paper describes an experimental investigation of a transversely forced, swirl stabilized combustor. Its objective is to compare the unsteady flow structures in single and triple nozzle combustors and determine how well a single nozzle configuration emulates the characteristics of a multi-nozzle one. The experiment consists of a series of velocity field measurements captured on planes normal to the jet axis. As expected, there are differences between the single and triple-nozzle flow fields, but the differences are not large in the regions upstream of the jet merging zone. Direct comparisons of the time averaged flow fields reveal a higher degree of non-axisymmetry for the flowfields of nozzles in a multi-nozzle configuration. Azimuthal decompositions of the velocity fields show that the transverse acoustic forcing has an important influence on the dynamics, but that the single and multi-nozzle configurations have similar forced response dynamics near the dump plane. Specifically, the axial dependence of the amplitude in the highest energy axisymmetric and helical flow structures is quite similar in the two configurations. This result suggests that the hydrodynamic influence of one swirling jet on the other is minimal and, as such, that jet-jet interactions in this configuration do not have a significant influence on the unsteady flow structures.Copyright © 2014 by ASME

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research