Efficient methods for analysis of flows in grooved annuli

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 publicationAdvances in Mathematical and Computational Methods: Addressing Modern Challenges of Science, Technology, and Society
Pages109-112
Volume1368
Publication statusPublished - 2011
Externally publishedYes

Publication series

NameAIP Conference Proceedings
Volume1368
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

TitleAdvances in Mathematical and Computational Methods: Addressing Modern Challenges of Science, Technology, and Society
PlaceCanada
CityWaterloo, ON
Period25 - 29 July 2011

Abstract

Effects of different forms of grooves/ribs on the pressure losses are studied. Because of an uncountable number of possible shapes, an efficient method for modeling of the surface topography needs to be created as well as an efficient method for the solution of the governing equations for flows in domain bounded by grooved surfaces needs to be developed. Fourier-expansion-based representation of surface topography is used and this provides a low-order modeling of the surface geometry. Spectrally-accurate method for solution of the field equations based on the Fourier-Chebyshev expansions is used. It can be shown that the effects of the grooves may be decomposed into (i) effects due to the change in the average position of each cylinder and (ii) effects due to the shape of the grooves. The latter ones will be illustrated on the basis of extensive numerical experiments. The results show strong dependence of pressure losses on the wave number α of the grooves (shape effects) and on the average radius of the annuli (global geometry effects). It is possible to achieve significant reduction of pressure losses through judicious selection of the surface topography. © 2011 American Institute of Physics.

Research Area(s)

  • grooved annuli, Immersed Boundary Condition method (IBC), spectral method

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)

Efficient methods for analysis of flows in grooved annuli. / Moradi, H.Vafadar; Floryan, J. M.

Advances in Mathematical and Computational Methods: Addressing Modern Challenges of Science, Technology, and Society. Vol. 1368 2011. p. 109-112 (AIP Conference Proceedings; Vol. 1368).

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