Detail publikace

Tensors of added effect of the liquid in a thin hydrophobic gap

FIALOVÁ, S. POCHYLÝ, F. ZAPOMĚL, J. HAVLÁSEK, M.

Anglický název

Tensors of added effect of the liquid in a thin hydrophobic gap

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

Originální abstrakt

The article presents a mathematical model of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes the axially traversed hydrodynamic sealing gap of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine. The interaction is expressed by matrices of stiffness and damping. The shown problems were solved with the assumption of a hydrophilic surface with zero velocity vectors on the motionless surface and zero relative velocity vectors on the moving surface. Owing to the technological progress in the area of surface layers it is not necessary anymore to assume the surface of the solid/liquid interaction to be hydrophilic. It is possible to generalize the solution of hydrodynamic problems and assume hydrophobic character of the surface in the solid/liquid interaction. That means slipping of the liquid on the hydrophobic surface. Comparison of the effect of the surface properties is shown within the article.

Anglický abstrakt

The article presents a mathematical model of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes the axially traversed hydrodynamic sealing gap of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine. The interaction is expressed by matrices of stiffness and damping. The shown problems were solved with the assumption of a hydrophilic surface with zero velocity vectors on the motionless surface and zero relative velocity vectors on the moving surface. Owing to the technological progress in the area of surface layers it is not necessary anymore to assume the surface of the solid/liquid interaction to be hydrophilic. It is possible to generalize the solution of hydrodynamic problems and assume hydrophobic character of the surface in the solid/liquid interaction. That means slipping of the liquid on the hydrophobic surface. Comparison of the effect of the surface properties is shown within the article.

Klíčová slova anglicky

added effect, hydrophobic, thin gap, simmulation

Vydáno

23.09.2016

Nakladatel

AIP Publishing

Místo

Šamorín – Čilistov, Slovak Republic

ISBN

978-0-7354-1426-6

Kniha

THE MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMOMECHANICS (35MDFMT): Proceedings of the 35th Meeting of Departments of Fluid Mechanics and Thermomechanics

Číslo edice

Volume 1768

Strany od–do

020012-1–020012-6

Počet stran

235

BIBTEX


@inproceedings{BUT130698,
  author="Simona {Fialová} and František {Pochylý} and Jaroslav {Zapoměl} and Michal {Havlásek},
  title="Tensors of added effect of the liquid in a thin hydrophobic gap",
  booktitle="THE MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMOMECHANICS (35MDFMT): Proceedings of the 35th Meeting of Departments of Fluid Mechanics and Thermomechanics",
  year="2016",
  month="September",
  pages="020012-1--020012-6",
  publisher="AIP Publishing",
  address="Šamorín – Čilistov, Slovak Republic",
  isbn="978-0-7354-1426-6"
}