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Drag reduction by compliant coatings made of a homogeneous material

Drag reduction by compliant coatings made of a homogeneous material Abstract The possibility of drag reduction due to compliant coatings of viscoelastic silicone rubbers has been tested experimentally. For this purpose, a series of single-layer coatings of various thicknesses was made of a homogeneous material. The experiments were carried out in a high-speed cavitation tunnel of Pusan National University. Dynamic viscoelastic properties of coating materials were carefully measured. The range of flow rates and coating thicknesses was calculated assuming that the coatings can interact intensively with the dynamic structures of the turbulent boundary layer only in the region of frequencies of their maximum compliance. The predicted range of coating parameters and flow velocities, in which the coatings reduce drag, is compared with experimental data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

Drag reduction by compliant coatings made of a homogeneous material

Kulik, V. M.; Boiko, A. V.; Lee, I.
Thermophysics and Aeromechanics , Volume 25 (4): 10 – Jul 1, 2018
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Publisher
Springer Journals
Copyright
2018 Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S0869864318040054
Publisher site
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Abstract

Abstract The possibility of drag reduction due to compliant coatings of viscoelastic silicone rubbers has been tested experimentally. For this purpose, a series of single-layer coatings of various thicknesses was made of a homogeneous material. The experiments were carried out in a high-speed cavitation tunnel of Pusan National University. Dynamic viscoelastic properties of coating materials were carefully measured. The range of flow rates and coating thicknesses was calculated assuming that the coatings can interact intensively with the dynamic structures of the turbulent boundary layer only in the region of frequencies of their maximum compliance. The predicted range of coating parameters and flow velocities, in which the coatings reduce drag, is compared with experimental data.

Journal

Thermophysics and Aeromechanics – Springer Journals

Published: Jul 1, 2018

References

  • Effect of compliant wall motion on turbulent boundary layers
    D.M. Bushnell, J.N. Hefner, R.L. Ash
  • Compliant coatings: a decade of progress
    M. Gad-el-Hak
  • Investigation of the stable interaction of a passive compliant surface with a turbulent boundary layer
    T. Lee, M. Fisher, W.H. Schwarz
  • Forced oscilations of a layer of a viscoelastic material under the action of a convective pressure wave
    V.M. Kulik
  • Deformation of viscoelastic coating in a turbulent flow
    V.M. Kulik
  • Action of a turbulent flow on a hard compliant coating
    V.M. Kulik
  • Boundary conditions on a compliant wall in the turbulent flow
    V.M. Kulik
  • The response of an incompressible, viscoelastic coating to pressure fluctuations in a turbulent boundary layer
    J.H. Duncan
  • Peculiarities of deformation of compliant coatings with increased strength
    V.M. Kulik
  • K.-S. Choi
    V.M. Kulik, I.S. Poguda, and B.N. Semenov, Experimental investigation of one-layer viscoelastic coating action on turbulent friction and wall pressure fluctuations, and Recent Developments in Turbulence Management, in
  • Turbulent drag reduction using compliant surfaces
    K.-S. Choi, X. Yang, B.R. Clayton, T. Glover, M. Atlar, B.N. Semenov, V.M. Kulik
  • Aging of pliable coatings
    V.M. Kulik
  • Experiments on the effects of aging on compliant coating drag reduction
    P.R. Bandyopadhyay, C. Henoch, J.D. Hrubes, B.N. Semenov, A.I. Amirov, V.M. Kulik, N.V. Malykh, A.G. Malyuga, K.-S. Choi
  • Wave properties of coating for skin friction reduction
    V.M. Kulik, I. Lee, H.H. Chun
  • Measurement of dynamic properties of viscoelastic materials
    V.M. Kulik, B.N. Semenov, S.L. Morozova
  • Measurement of dynamic proper-ties of viscoelastic materials
    V.M. Kulik, B.N. Semenov, A.V. Boiko, B.M. Seoudi, H.H. Chun, I. Lee
  • Measurement method of complex viscoelastic material properties
    A.V. Boiko, V.M. Kulik, B. Seoudi, H.H. Chun, I. Lee
  • Verification of drag-reduction capabilities of stiff compliant coatings in air flow at moderate speeds
    A.V. Boiko, V.M. Kulik, H.H. Chun, I. Lee
  • Organized motion in turbulent flow
    B.J. Cantwell
  • Newport, Rhode Island, Naval Undersea Warfare Center, P
    S.J. Russell, Measured wall pressure signatures of turbulence producing structures, in