Thermophysics and Aeromechanics

, Volume 22, Issue 3, pp 319–328 | Cite as

Shear stresses in turbulent pulsating channel flow

  • A.E. Goltsman
  • I.A. Davletshin
  • N.I. Mikheev
  • A.A. Paereliy
Article

Abstract

An experimental study of the structure of a pulsating air flow through a smooth channel was carried out. The flow pulsations were artificially imposed onto the main flow through periodic blockage of channel outlet cross section. A method for determining the additional shear stresses due to the imposed flow pulsations is proposed. The essence of the method consists in the determination of the shear stresses based on the revealed dynamics of the flow velocity field, whose measurements were carried out by the optical method from the results of digital video recording of the flow pattern. Profiles of velocities, accelerations, and additional shear stresses during a period of imposed flow pulsations were obtained.

Keywords

imposed flow pulsations flow oscillation frequency oscillation phase velocity profiles shear stress 

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Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • A.E. Goltsman
    • 1
  • I.A. Davletshin
    • 1
    • 2
  • N.I. Mikheev
    • 1
    • 2
  • A.A. Paereliy
    • 1
  1. 1.Kazan Scientific Center RASKazanRussia
  2. 2.Kazan National Research Technical University named after A.N. TupolevKazanRussia

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