Thesis-2015-Koli.pdf (15.36 MB)

CFD investigation of a switched vortex valve for cooling air flow modulation in aeroengine

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thesis
posted on 27.01.2016 by Bharat Koli
This thesis is focused on understanding the flow features associated with a Switched Vortex Valve (SVV) using Computational Fluid Dynamics (CFD) methods for application in aero-engines. In this research the major emphasis was put on detailed flow analysis which was limited in experimental studies of SVVs. Considering the complex geometry of the SVV, for simplicity it was decided to divide the SVV device into two parts before studying the device as whole. These parts are the vortex chamber and flow switching device, which together constitute the SVV device. In this research, different turbulence models were evaluated which are mainly Reynolds average Navier-Stokes (RANS) and unsteady Reynolds average NavierStokes (URANS). The different turbulence models are the k- , SA and the RSM, and for a test case LES was also implemented.

Funding

This research work has been funded by the Rolls-Royce plc. and the Engineering and Physical Sciences Research Council of the United Kingdom through the University of Surrey Postgraduate Studentship award.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Publisher

© Bharat Ramesh Koli

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in the Thermo-Fluids Systems UTC Department of Mechanical Engineering Sciences University of Surrey

Language

en

Qualification name

EngD

Qualification level

Doctoral

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