International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Study of the Adhesive Coefficient Effect on the Hydraulic Losses and Cavitation

  • Pochly, Frantisek (Faculty of Mechanical Engineering, Brno University of Technology) ;
  • Fialova, Simona (Faculty of Mechanical Engineering, Brno University of Technology) ;
  • Kozubkova, Milada (Faculty of Mechanical Engineering, Technical University of Ostrava) ;
  • Zavadil, Lukas (Faculty of Mechanical Engineering, Technical University of Ostrava)
  • Accepted : 2010.12.14
  • Published : 2010.12.31
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Abstract

The article is focused in three areas. In the first part there are analyzed the adhesion forces at the liquid and solid surface interface. There are shown the measured values of surface energy for different types of surfaces. The value of surface energy is decisive for determining the extent of the surface wettability by the liquid. The second part points to the possible negative effects of partly wettable surfaces, showing susceptibility to cavitation. The third section describes the practical aspects of surface wettability by the liquid. Under the new boundary conditions bases, expressing the effect of adhesion forces, there are determined the centrifugal pump characteristics.

Keywords

References

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  4. Pochyly, F., Fialova, S., Rinka, L., “Adhesive forces at a solid-liquid interface,” Zeszyty naukowe, ISSN 1897-2683, pp. 245-252.
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  6. Pochyly, F., Fialova, S., Haban, V., Rinka, L., “Prakticeskoje ispolzovanie smacivajemosti,” PCVEXPO 08, ISBN 978-5-7038-3214-1.
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  8. Fialova, S., Pochyly, F., Rinka, L., “The Boundary Conditions of the Adhesive Forces Effect on the Solid/Liquid Interface,” Engineering mechanics 2009, ISBN 978-80-86246-35-2, pp. 241-246.
  9. POCHYLÝ, F., FIALOVÁ, S., KOZUBKOVÁ, M., ZAVADIL, L., “Assessment of cavitation creation depending on the surface wettability,” In Proceedings of the 25th IAHR Symposium on Hydraulic Machinery and Systems, Timisoara, Romania, Editura Politehnica Timisoara, Romania, 2010, pp. 839-846, ISBN 978-606-554-136-8.

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