Enhanced heat transfer for microturbine recuperators

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationAircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume1
ISBN (Print)9780791878507
Publication statusPublished - 2001
Externally publishedYes

Publication series

NameProceedings of the ASME Turbo Expo
Volume1

Conference

TitleASME Turbo Expo 2001: Power for Land, Sea, and Air, GT 2001
PlaceUnited States
CityNew Orleans, LA
Period4 - 7 June 2001

Abstract

Calculated and measured results are presented to quantify the effects of surface waves in laminar flow through high-aspect ratio channels typical of many in microturbine recuperators. Flow structures were calculated with spectral methods that solve incompressible Navier-Stokes equations and use Fourier expansions to represent the corrugated-wall boundary condition. Stability analysis with a generalized Floquet formulation that accounts for spatial modulation of the flow was used with the spectral flow field to predict the shape of streamlines that lead to streamwise vortices. Results indicate that vortices are produced in a very narrow range of streamline wavelengths and amplitudes. Streamlines were also calculated using a RANS method for the purpose of finding a surface that would produce the necessary streamline patterns. Hot-wire measurements show the frequency and amplitude of streamwise vortex structures increases in the flow over a sinusoidal wall with the predicted surface waves. Copyright © 2001 by ASME.

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Enhanced heat transfer for microturbine recuperators. / Thompson, Brian E.; Floryan, J. M.; Nolan, Richard E.; Osgood, Sarah J.

Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery. Vol. 1 American Society of Mechanical Engineers (ASME), 2001. (Proceedings of the ASME Turbo Expo; Vol. 1).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review