Effect of temperature nonuniformity on heat transfer in an unshrouded transonic HP turbine: An experimental and computational investigation

Imran Qureshi*, Andy D. Smith, Kam S. Chana, Thomas Povey

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Detailed experimental measurements have been performed to understand the effects of turbine inlet temperature distortion (hot-streaks) on the heat transfer and aerodynamic characteristics of a full-scale unshrouded high pressure turbine stage at flow conditions that are representative of those found in a modern gas turbine engine. To investigate hot-streak migration, the experimental measurements are complemented by three-dimensional steady and unsteady CFD simulations of the turbine stage. This paper presents the time-averaged measurements and computational predictions of rotor blade surface and rotor casing heat transfer. Experimental measurements obtained with and without inlet temperature distortion are compared. Time-mean experimental measurements of rotor casing static pressure are also presented. CFD simulations have been conducted using the Rolls-Royce code Hydra, and are compared to the experimental results. The test turbine was the unshrouded MT1 turbine, installed in the Turbine Test Facility (previously called Isentropic Light Piston Facility) at QinetiQ, Farnborough UK. This is a short duration transonic facility, which simulates engine representative M, Re, √, and T g/Twat the turbine inlet. The facility has recently been upgraded to incorporate an advanced second-generation temperature distortion generator, capable of simulating well-defined, aggressive temperature distortion both in the radial and circumferential directions, at the turbine inlet.

Original languageEnglish
Title of host publicationASME Turbo Expo 2010
Subtitle of host publicationPower for Land, Sea, and Air, GT 2010
Pages255-270
Number of pages16
EditionPARTS A AND B
DOIs
Publication statusPublished - 1 Dec 2010
EventASME Turbo Expo 2010: Power for Land, Sea, and Air, GT 2010 - Glasgow, United Kingdom
Duration: 14 Jun 201018 Jun 2010

Publication series

NameProceedings of the ASME Turbo Expo
NumberPARTS A AND B
Volume4

Conference

ConferenceASME Turbo Expo 2010: Power for Land, Sea, and Air, GT 2010
Country/TerritoryUnited Kingdom
CityGlasgow
Period14/06/1018/06/10

Keywords

  • Aerothermodynamics
  • Heat transfer
  • Hot-streak
  • HP rotor
  • HP turbine
  • OTDF
  • Rotor casing
  • RTDF
  • Transonic

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Effect of temperature nonuniformity on heat transfer in an unshrouded transonic HP turbine: An experimental and computational investigation'. Together they form a unique fingerprint.

Cite this