Continuous closed-loop transonic linear cascade for aero-thermal performance studies in micro-turbomachinery

E. Yakirevich, R. Miezner, B. Leizeronok, B. Cukurel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The present work summarizes the design process of a new continuous closed-loop hot transonic linear cascade. The facility features fully modular design which is intended to serve as a test bench for axial micro-turbomachinery components in independently varying Mach and Reynolds numbers ranges of 0-1.3 and 2.104 - 6.105 respectively. Moreover, for preserving heat transfer characteristics of the hot gas section, the gas to solid temperature ratio (up to 2) is retained. This operational environment has not been sufficiently addressed in prior art, although it is critical for the future development of ultraefficient high power or thrust devices. In order to alleviate the dimension specific challenges associated with micro-turbomachinery, the facility is designed in a highly versatile manner, and can easily accommodate different geometric configurations (pitch, ±20° stagger angle, ±20° incidence angle), absent of any alterations to the test section. Owing to the quick swap design, the vane geometry can be easily replaced without manufacturing or re-assembly of other components. Flow periodicity is achieved by the inlet boundary layer suction and independently adjustable tailboard mechanisms. Enabling test-aided design capability for micro gas turbine manufacturers, aero-thermal performance of various advanced geometries can be assessed in engine relevant environments.

Original languageEnglish
Title of host publicationMicroturbines, Turbochargers and Small Turbomachines; Steam Turbines
ISBN (Electronic)9780791850954
DOIs
StatePublished - 2017
EventASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 - Charlotte, United States
Duration: 26 Jun 201730 Jun 2017

Publication series

NameProceedings of the ASME Turbo Expo
Volume8

Conference

ConferenceASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
Country/TerritoryUnited States
CityCharlotte
Period26/06/1730/06/17

Keywords

  • Aero-thermal performance assessment
  • Incidence and stagger angle variation
  • Independent Reynolds Mach simulation
  • Micro-turbomachinery
  • Transonic turbine cascade design

All Science Journal Classification (ASJC) codes

  • General Engineering

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