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Effects of frequency and amplitude of oscillation on low Reynolds number pulsating flow in a circular pipe

Effects of frequency and amplitude of oscillation on low Reynolds number pulsating flow in a... This paper presents studies on low Reynolds number pulsating flow in a circular pipe. The Navier‐Stokes equations expressed in terms of primitive variables on a clustered staggered grid were solved. A block tridiagonal algorithm coupled with cyclic reduction techniques was used to reduce computation effort. The effects of frequency on the amplitude of the fluctuating axial velocity are confined mainly to the wall region. The effects due to changes in frequency parameter are insignificant near the inlet region. The amplitude of pulsating axial velocity changes from inlet to the fully developed region by about 10% whereas for the time mean velocity, the amplitude almost doubles. It was observed that flow reversal begins at the pipe inlet section when the amplitude of oscillation is equal or greater than 1.0 and in the developing region, flow reversal would occur when the amplitude factor is greater than the critical amplitude factor. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Computations Emerald Publishing

Effects of frequency and amplitude of oscillation on low Reynolds number pulsating flow in a circular pipe

W.K. Chan; S.L. Lee; C.Y. Liu
Engineering Computations , Volume 19 (1): 14 – Feb 1, 2002
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Publisher
Emerald Publishing
Copyright
Copyright © 2002 MCB UP Ltd. All rights reserved.
ISSN
0264-4401
DOI
10.1108/02644400210413676
Publisher site
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Abstract

This paper presents studies on low Reynolds number pulsating flow in a circular pipe. The Navier‐Stokes equations expressed in terms of primitive variables on a clustered staggered grid were solved. A block tridiagonal algorithm coupled with cyclic reduction techniques was used to reduce computation effort. The effects of frequency on the amplitude of the fluctuating axial velocity are confined mainly to the wall region. The effects due to changes in frequency parameter are insignificant near the inlet region. The amplitude of pulsating axial velocity changes from inlet to the fully developed region by about 10% whereas for the time mean velocity, the amplitude almost doubles. It was observed that flow reversal begins at the pipe inlet section when the amplitude of oscillation is equal or greater than 1.0 and in the developing region, flow reversal would occur when the amplitude factor is greater than the critical amplitude factor.

Journal

Engineering Computations – Emerald Publishing

Published: Feb 1, 2002

Keywords: Flow; Computation

References

  • Oscillatory flow near the entry of a circular tube
    Atabek, H.B.; Chang, C.C.
  • Engineering Fluid Mechanics Workshop Report
    Brooks, N.; Brown, R.A.
  • An experimental investigation of flow in an oscillating pipe
    Clamen, M.; Minton, P.
  • Numerical solutions of pulsating flow and heat transfer characteristics in a pipe
    Cho, H.W.; Hyun, J.M.
  • Oscillatory flow measurements with a directionally sensitive laser velocity
    Dension, E.B.; Stevenson, W.H.
  • Computational Techniques for Fluid Dynamics
    Fletcher, C.A.J.
  • Development of a periodic flow in a rigid tube
    Florio, P.J.; Mueller, W.K.
  • Numerical Heat Transfer and Fluid Flow
    Patankar, S.V.
  • The pulsating viscous flow superimposed on the steady laminar motion of incompressible fluid in a circular pipe
    Uchida, S.