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Direct numerical simulation of rotating turbulent duct flow
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-9819-2906
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-2711-4687
2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A direct simulation of turbulent flow in a rotating square duct using a second-order finite-volume method was performed. The axis of rotation was normal to the direction of the mean flow in the duct. The simulations are performed at Re d = 4400 and for Ro d = 0 up to 0.77. The strong effect of rotation on both the mean axial and secondary flows is plainly exhibited. A linear increase in the magnitude of the secondary flow was found with increasing rate of rotation. Turbulence quantities are presented to shed some light on the role of the boundary layer structure on the resistance of the flow. The growth of large-scale secondary roll-cells in the axial direction is studied with reference to their dependence on the rotation number. The case of turbulent flow in a rotating duct that has been tilted 45° around the axis of the mean flow is presented to illustrate the importance of geometric constraints on the characteristics of the flow.

Place, publisher, year, edition, pages
2005. 911-916 p.
Series
4th International Symposium on Turbulence and Shear Flow Phenomena, 3
Keyword [en]
Axial direction, Axis of rotation, Boundary layer structure, Direct simulation, Duct flow, Geometric constraint, Mean flow, Rotation number, Second orders, Square ducts, Ducts, Finite volume method, Rotation, Secondary flow, Turbulent flow, Shear flow
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-157092Scopus ID: 2-s2.0-34547705292OAI: oai:DiVA.org:kth-157092DiVA: diva2:771870
Conference
4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4; Williamsburg, VA; United States; 27 June 2005 through 29 June 2005
Note

QC 20141215

Available from: 2014-12-15 Created: 2014-12-05 Last updated: 2014-12-15Bibliographically approved

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Brethouwer, GeertJohansson, Arne V.

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
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Output format
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