Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

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

Thermophysics and Aeromechanics , Volume 25 (4): 10 – Jul 1, 2018

Loading next page...
 
/lp/springer-journals/drag-reduction-by-compliant-coatings-made-of-a-homogeneous-material-gwi2hZHB5F
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
See Article on Publisher Site

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 AeromechanicsSpringer Journals

Published: Jul 1, 2018

References