University of Surrey

Test tubes in the lab Research in the ATI Dance Research

A comparative study of cascade vanes and drilled nozzle designs for pre-swirl

Javiya, U, Chew, J, Hills, N and Scanlon, T (2011) A comparative study of cascade vanes and drilled nozzle designs for pre-swirl In: ASME Turbo Expo 2011, 2011-06-06 - 2011-06-10.

[img] Text
GT2011 46006 final.pdf - ["content_typename_UNSPECIFIED" not defined]
Restricted to Repository staff only

Download (1MB)

Abstract

Design of pre-swirl systems is important for the secondary air cooling system of gas turbine engines. In this paper, three pre-swirl nozzles, a cascade vane and two drilled nozzles are analysed and their performances are compared. The two drilled nozzles considered are a straight drilled nozzle and an aerodynamically designed nozzle. CFD analyses are presented for stand-alone and pre-swirl system 3D sector models at engine operating conditions near to engine maximum power condition rotational Reynolds number (Re ?) up to 4.6 ! 10 . Nozzle performance is characterised by the nozzle discharge coefficient (C ), nozzle velocity coefficient (?η) and cooling air delivery temperature. Two commonly used eddy viscosity models are employed for the study, the standard κ-ε and Spalart-Allmaras models with wall functions. Both models give very similar results for C and η and are in reasonable agreement with available experimental data. Effects of nozzle or vane number and sealing flow have been analysed. The cascade vanes perform slightly better than the aerodynamically designed drilled nozzles but the final design choice will depend on other component and manufacturing costs. An elementary model is presented to separate temperature losses due to the nozzle, stator drag and sealing flow. Copyright © 2011 by Rolls-Royce plc.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
AuthorsEmailORCID
Javiya, UUNSPECIFIEDUNSPECIFIED
Chew, JUNSPECIFIEDUNSPECIFIED
Hills, NUNSPECIFIEDUNSPECIFIED
Scanlon, TUNSPECIFIEDUNSPECIFIED
Date : 2011
Identification Number : https://doi.org/10.1115/GT2011-46006
Contributors :
ContributionNameEmailORCID
PublisherASME, UNSPECIFIEDUNSPECIFIED
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:27
Last Modified : 28 Mar 2017 13:27
URI: http://epubs.surrey.ac.uk/id/eprint/804968

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800