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Effect of Eccentricity on Pipe Boundary Layer Growth for Flows in Annulus

Asim, Taimoor, Mishra, Rakesh and Rao, Vasu (2012) Effect of Eccentricity on Pipe Boundary Layer Growth for Flows in Annulus. In: Computing and Engineering Researchers’ Conference, March 2012, University of Huddersfield.

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      Abstract

      Laminar vortex rings are produced in the laboratories using a piston/cylinder arrangement. The dynamics of these rings are being extensively studied over the last couple of decades. Research has shown that the most important flow feature which describes the generation and propagation of these rings is the boundary layer growth. The present study focuses on the effect of eccentricity on the pipe boundary layer growth for flows in annulus. Two geometries with different eccentricities are modeled and numerically solved using commercial CFD package. The results are then compared with a concentric geometry. The results indicate toward a faster flow development in eccentric annulus. As vortex rings are generated when the boundary layer is still developing, eccentricity adversely effects the production of laminar vortex rings. This faster flow development hints towards a faster transition of Navier-Stokes equation’s solution from Rayleigh to Blasius.

      Item Type: Conference or Workshop Item (UNSPECIFIED)
      Uncontrolled Keywords: boundary layer, eccentricity, CFD
      Subjects: T Technology > TJ Mechanical engineering and machinery
      Schools: School of Computing and Engineering
      School of Computing and Engineering > Automotive Engineering Research Group
      School of Computing and Engineering > Computing and Engineering Annual Researchers' Conference (CEARC)
      School of Computing and Engineering > Diagnostic Engineering Research Centre
      School of Computing and Engineering > Diagnostic Engineering Research Centre > Machinery Condition and Performance Monitoring Research Group
      School of Computing and Engineering > Diagnostic Engineering Research Centre > Measurement System and Signal Processing Research Group
      School of Computing and Engineering > Informatics Research Group
      School of Computing and Engineering > Informatics Research Group > XML, Database and Information Retrieval Research Group
      School of Computing and Engineering > Pedagogical Research Group
      Related URLs:
      Depositing User: Taimoor Asim
      Date Deposited: 15 May 2012 14:20
      Last Modified: 22 Jul 2014 14:43
      URI: http://eprints.hud.ac.uk/id/eprint/13588

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